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* [Bug middle-end/70359] [7/8/9 Regression] Code size increase for x86/ARM/others compared to gcc-5.3.0
[not found] <bug-70359-4@http.gcc.gnu.org/bugzilla/>
@ 2018-12-04 15:09 ` law at redhat dot com
0 siblings, 0 replies; only message in thread
From: law at redhat dot com @ 2018-12-04 15:09 UTC (permalink / raw)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70359
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #48 from Jeffrey A. Law <law at redhat dot com> ---
Per c#43 and c#48.
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From: "vmakarov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/88282] [9 Regression] ICE in df_install_refs at gcc/df-scan.c:2379
Date: Tue, 04 Dec 2018 15:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88282
--- Comment #7 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Tue Dec 4 15:10:46 2018
New Revision: 266784
URL: https://gcc.gnu.org/viewcvs?rev=266784&root=gcc&view=rev
Log:
2018-12-04 Vladimir Makarov <vmakarov@redhat.com>
PR target/88282
* ira-costs.c (exec): Try bigger class to use smaller register
move cost.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ira-costs.c
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From: "emsr at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/88341] [9 Regression] taking norm() of complex variable fails to compile with -std=c++11
Date: Tue, 04 Dec 2018 15:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88341
--- Comment #3 from emsr at gcc dot gnu.org ---
I've got a simple fix.
I can verify that it works but how do you run the testsuite for c++11?
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/88282] [9 Regression] ICE in df_install_refs at gcc/df-scan.c:2379
Date: Tue, 04 Dec 2018 15:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88282
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |law at redhat dot com
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--- Comment #8 from Jeffrey A. Law <law at redhat dot com> ---
Fixed by Vlad's patch on the trunk.
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Subject: [Bug testsuite/88310] [9 Regression] Guarded profile use + reorder tests have become UNSUPPORTED
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--- Comment #4 from Iain Sandoe <iains at gcc dot gnu.org> ---
Author: iains
Date: Tue Dec 4 15:31:06 2018
New Revision: 266785
URL: https://gcc.gnu.org/viewcvs?rev=266785&root=gcc&view=rev
Log:
testsuite - restore the tests for profiled + partitioned code.
2018-12-04 Iain Sandoe <iain@sandoe.co.uk>
PR testsuite/88310
* lib/target-supports.exp (check_effective_target_freorder):
Suppress warnings for missing profile.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/lib/target-supports.exp
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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--- Comment #5 from Iain Sandoe <iains at gcc dot gnu.org> ---
thus fixed
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Subject: [Bug libstdc++/88341] [9 Regression] taking norm() of complex variable fails to compile with -std=c++11
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
make check RUNTESTFLAGS=--target_board=unix/-std=gnu++11
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/63184] [7/8/9 Regression] Fails to simplify comparison
Date: Tue, 04 Dec 2018 15:49:00 -0000
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--- Comment #11 from Jeffrey A. Law <law at redhat dot com> ---
So could we reassociate the address arithmetic in match.pd so that we fold away
the pointer computation in favor of index adjustment in the ARRAY_REF? Do we
have to worry about overflow in address reassociation?
Using the gimple from c#2:
i.0_3 = i;
_4 = i.0_3 * 4;
_5 = (sizetype) _4;
_6 = _5 + 4;
_7 = &a[1] + _6;
_9 = i.0_3 + 2;
_10 = &a[_9];
if (_7 != _10)
Transform it into:
i.0_3 = i;
temp = i.0_3 + 1 + 1; /* +1 from pointer arith, +1 from array index ]
_4 = i.0_3 * 4; /* DEAD */
_5 = (sizetype) _4; /* DEAD */
_6 = _5 + 4; /* DEAD */
_7 = &a[temp];
_9 = i.0_3 + 2;
_10 = &a[_9];
if (_7 != _10)
That gives us a fighting chance to see that temp is equivalent to _9 and that
the ultimate addresses are equal.
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Subject: [Bug sanitizer/88260] c++ code instrumented with address sanitizer crashes
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
i686-elf certainly doesn't have asan support, for i?86-*-* only Linux, Darwin
and Solaris, so it is strange how have you compiled libasan at all.
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Subject: [Bug c/88354] New: Please warn on the use of a va_list argument in *printf functions instead of v*printf
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88354
Bug ID: 88354
Summary: Please warn on the use of a va_list argument in
*printf functions instead of v*printf
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: vincent-gcc at vinc17 dot net
Target Milestone: ---
A {,f,d,s,sn}printf function can mistakenly be used instead of
v{,f,d,s,sn}printf. for instance, this is what happened in atop:
https://github.com/Atoptool/atop/pull/43/commits/0e43049493e65b412e1c0def62a09ceac2bb3110
Type checking should warn when this occurs. Implementing the warning is
possible because the {,f,d,s,sn}printf functions cannot take a va_list
argument, so that this is necessarily an error.
An example of buggy code for which one should get a warning:
#include <stdio.h>
#include <stdarg.h>
void f (int i, const char *s, ...)
{
if (i)
{
va_list args;
va_start (args, s);
fprintf (stderr, s, args);
va_end (args);
}
}
int main (void)
{
unsigned long d = 17;
f (1, "n = %lu\n", d);
return 0;
}
(The correct code is obtained by replacing fprintf with vfprintf.)
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Subject: [Bug target/61976] aix64: Data corruption in struct passed by value
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61976
--- Comment #4 from David Edelsohn <dje at gcc dot gnu.org> ---
Author: dje
Date: Tue Dec 4 15:51:51 2018
New Revision: 266786
URL: https://gcc.gnu.org/viewcvs?rev=266786&root=gcc&view=rev
Log:
PR target/61976
* config/rs6000/rs6000.c (rs6000_function_arg): Don't pass aggregates
in FPRs on AIX.
(rs6000_arg_partial_bytes): Same.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000.c
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Subject: [Bug fortran/88328] ICE in resolve_tag_format, at fortran/io.c:1641
Date: Tue, 04 Dec 2018 15:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88328
kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
--- Comment #2 from kargl at gcc dot gnu.org ---
(In reply to kargl from comment #1)
> (In reply to G. Steinmetz from comment #0)
> > Affects versions down to at least gcc-5 :
> >
> >
> > $ cat z1.f90
> > program p
> > character(3), parameter :: a(0) = [character(3)::]
> > print a
> > end
> >
> >
> > $ gfortran-9-20181202 -c z1.f90
> > f951: internal compiler error: Segmentation fault
> > 0xb2ec9f crash_signal
> > ../../gcc/toplev.c:326
> > 0x63ddee resolve_tag_format
> > ../../gcc/fortran/io.c:1641
>
> I get
>
> % gfcx -c a.f90
> a.f90:3:10:
>
> 3 | print a
> | 1
> Error: FORMAT tag at (1) cannot be a zero-sized array
>
> with this patch
>
> Index: gcc/fortran/io.c
> ===================================================================
> --- gcc/fortran/io.c (revision 266710)
> +++ gcc/fortran/io.c (working copy)
> @@ -1636,6 +1636,12 @@ resolve_tag_format (gfc_expr *e)
> gfc_expr *r;
> gfc_char_t *dest, *src;
>
> + if (e->value.constructor == NULL)
> + {
> + gfc_error ("FORMAT tag at %C cannot be a zero-sized array");
> + return false;
> + }
> +
> n = 0;
> c = gfc_constructor_first (e->value.constructor);
> len = c->expr->value.character.length;
> @@ -3231,12 +3237,17 @@ gfc_resolve_dt (gfc_dt *dt, locus *loc)
> {
> gfc_expr *e;
> io_kind k;
> + locus loc_tmp;
>
> /* This is set in any case. */
> gcc_assert (dt->dt_io_kind);
> k = dt->dt_io_kind->value.iokind;
>
> + loc_tmp = gfc_current_locus;
> + gfc_current_locus = *loc;
> RESOLVE_TAG (&tag_format, dt->format_expr);
> + gfc_current_locus = loc_tmp;
> +
> RESOLVE_TAG (&tag_rec, dt->rec);
> RESOLVE_TAG (&tag_spos, dt->pos);
> RESOLVE_TAG (&tag_advance, dt->advance);
The patch is slightly wrong. RESOLVE_TAG expands to 'if () return false',
so on failure gfc_current_locus is not reset.
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Subject: [Bug c/88354] Please warn on the use of a va_list argument in *printf functions instead of v*printf
Date: Tue, 04 Dec 2018 15:58:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2018-12-04
Ever confirmed|0 |1
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Subject: [Bug testsuite/88332] [9 regression] gcc.dg/Wattributes-10.c fails starting with r265728
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--- Comment #6 from seurer at gcc dot gnu.org ---
I tried it on the BE powerpc64 machine in the gcc compiler farm,
gcc110.fsffrance.org, and the same thing happens.
seurer@gcc1-power7:~/gcc/build/gcc-test$ ~/gcc/install/gcc-test/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/home/seurer/gcc/install/gcc-test/bin/gcc
COLLECT_LTO_WRAPPER=/home/seurer/gcc/install/gcc-test/libexec/gcc/powerpc64-unknown-linux-gnu/9.0.0/lto-wrapper
Target: powerpc64-unknown-linux-gnu
Configured with: /home/seurer/gcc/gcc-test/configure
--prefix=/home/seurer/gcc/install/gcc-test --enable-languages=c,fortran,c++
--disable-bootstrap
Thread model: posix
gcc version 9.0.0 20181101 (experimental) [trunk revision 265728] (GCC)
seurer@gcc1-power7:~/gcc/build/gcc-test$ make -k check-gcc
RUNTESTFLAGS=dg.exp=gcc.dg/Wattributes-10.c
. . .
=== gcc tests ===
Schedule of variations:
unix
Running target unix
Using /usr/share/dejagnu/baseboards/unix.exp as board description file for
target.
Using /usr/share/dejagnu/config/unix.exp as generic interface file for target.
Using /home/seurer/gcc/gcc-test/gcc/testsuite/config/default.exp as
tool-and-target-specific interface file.
Running /home/seurer/gcc/gcc-test/gcc/testsuite/gcc.dg/dg.exp ...
FAIL: gcc.dg/Wattributes-10.c target pdp11*-*-* (test for errors, line 15)
=== gcc Summary ===
# of expected passes 4
# of unexpected failures 1
/home/seurer/gcc/build/gcc-test/gcc/xgcc version 9.0.0 20181101 (experimental)
[trunk revision 265728] (GCC)
. . .
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Subject: [Bug testsuite/88332] [9 regression] gcc.dg/Wattributes-10.c fails starting with r265728
Date: Tue, 04 Dec 2018 16:01:00 -0000
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--- Comment #7 from seurer at gcc dot gnu.org ---
The original machine I saw the failure on was a power8 BE machine running RHEL
7.6 but gcc110 is:
seurer@gcc1-power7:~$ lscpu
Architecture: ppc64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Big Endian
CPU(s): 64
On-line CPU(s) list: 0-63
Thread(s) per core: 4
Core(s) per socket: 1
Socket(s): 16
NUMA node(s): 2
Model: 2.1 (pvr 003f 0201)
Model name: POWER7 (architected), altivec supported
Hypervisor vendor: (null)
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 4096K
NUMA node0 CPU(s): 0-31
NUMA node1 CPU(s): 32-63
seurer@gcc1-power7:~$ cat /etc/*release
CentOS Linux release 7.4.1708 (AltArch)
NAME="CentOS Linux"
VERSION="7 (AltArch)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (AltArch)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
SIG_FAMILY="AltArch ppc64"
CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"
CentOS Linux release 7.4.1708 (AltArch)
CentOS Linux release 7.4.1708 (AltArch)
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Subject: [Bug rtl-optimization/88317] ICE: Segmentation fault (in split_reg -> bitmap_set_bit -> bitmap_list_link_element)
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--- Comment #3 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> Vlad - can you look into the above? There's also lra_split_regs set
> (and maybe others) which will have similar problems. The following should
> make it easier to debug:
>
>
Sure, I will look at this. It is quite serious.
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Subject: [Bug libstdc++/88341] [9 Regression] taking norm() of complex variable fails to compile with -std=c++11
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88341
--- Comment #5 from emsr at gcc dot gnu.org ---
Author: emsr
Date: Tue Dec 4 16:26:39 2018
New Revision: 266788
URL: https://gcc.gnu.org/viewcvs?rev=266788&root=gcc&view=rev
Log:
2018-12-03 Edward Smith-Rowland <3dw4rd@verizon.net>
PR libstdc++/88341 - Complex norm doesn't compile with C++11
* include/std/complex (_S_do_it): Make C++20 constexpr.
* testsuite/26_numerics/complex/value_operations/pr88341.cc: New test.
Added:
trunk/libstdc++-v3/testsuite/26_numerics/complex/value_operations/pr88341.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/std/complex
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From: "emmanuel.le-trong@cnrs-orleans.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/88355] New: [c++20] Placeholder non-type template argument type deduction fails with custom types
Date: Tue, 04 Dec 2018 16:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88355
Bug ID: 88355
Summary: [c++20] Placeholder non-type template argument type
deduction fails with custom types
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: emmanuel.le-trong@cnrs-orleans.fr
Target Milestone: ---
Deducing the type of a non-type template parameter containing a placeholder
fails with custom types.
$ g++-9 -v
Using built-in specs.
COLLECT_GCC=g++-9
COLLECT_LTO_WRAPPER=/home/manu/system/opt/gcc-9/libexec/gcc/x86_64-pc-linux-gnu/9.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-9/configure --prefix=/home/manu/system/opt/gcc-9
--program-suffix=-9 : (reconfigured) ../gcc-9/configure
--prefix=/home/manu/system/opt/gcc-9 --program-suffix=-9
Thread model: posix
gcc version 9.0.0 20181127 (experimental) (GCC)
$ cat bug_2.cpp
#include <type_traits> // for std::is_same_v
struct T {};
template <auto value>
struct U {};
template <auto value>
void f (U <value>) {}
int main ()
{
constexpr T t;
f (U<1>{}); // OK
f<t> (U<t>{}); // OK
// This works:
auto x = t;
static_assert (std::is_same_v <decltype (x), T>); // OK
// This should work as well, as per [temp.arg.nontype], see below
f (U<t>{}); // Error
}
$ g++-9 -std=c++2a -Wall -Wextra bug_2.cpp -o bug_2
bug_2.cpp: In function ‘int main()’:
bug_2.cpp:20:21: error: no matching function for call to ‘f(U<T()>)’
20 | f (U<t>{}); // Error
| ^
bug_2.cpp:9:10: note: candidate: ‘template<auto value> void f(U<value>)’
9 | void f (U <value>) {}
| ^
bug_2.cpp:9:10: note: template argument deduction/substitution failed:
bug_2.cpp:20:21: note: mismatched types ‘T’ and ‘const T’
20 | f (U<t>{}); // Error
| ^
make: *** [<builtin>: bug_2] Error 1
The standardese in the latest draft is:
---8<---
12.3.2 Template non-type arguments [temp.arg.nontype]
If the type T of a template-parameter (12.1) contains a placeholder type
(9.1.7.5) or a placeholder for a deduced class type (9.1.7.6), the type of the
parameter is the type deduced for the variable x in the invented declaration
T x = template-argument ;
--->8---
>From gcc-bugs-return-624210-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 16:47:57 2018
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/88341] [9 Regression] taking norm() of complex variable fails to compile with -std=c++11
Date: Tue, 04 Dec 2018 16:47:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed then. Thanks, Ed.
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Subject: [Bug c++/86943] [7/8/9 Regression] Wrong code when converting stateless generic lambda to function pointer
Date: Tue, 04 Dec 2018 17:05:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
pt.c calls here:
ret = (build_new_method_call
(instance, fn,
&call_args, NULL_TREE,
qualified_p ? LOOKUP_NONVIRTUAL : LOOKUP_NORMAL,
/*fn_p=*/NULL,
complain));
and doesn't in any way tell it that CALL_FROM_THUNK_P (t) is true and that it
should avoid some or all? argument conversions. Or shall it call a different
function in that case instead?
In any case, not working on this PR anymore.
>From gcc-bugs-return-624212-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 17:09:33 2018
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Subject: [Bug c++/86943] [7/8/9 Regression] Wrong code when converting stateless generic lambda to function pointer
Date: Tue, 04 Dec 2018 17:09:00 -0000
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'll just include the testcase for the testsuite from the above patch:
// PR c++/86943
// { dg-do run { target c++14 } }
int c[3];
struct S
{
S () : s (1234) { c[0]++; }
S (const S &) { __builtin_abort (); }
S (S &&x) noexcept { if (x.s != 1234) __builtin_abort (); s = 1234; x.s =
2345; c[1]++; }
~S () { if (s != 1234 && s != 2345) __builtin_abort (); c[2]++; }
int s;
};
using F = void (*) (S);
F
foo ()
{
return [] (auto val) { if (val.s != 1234) __builtin_abort (); };
}
int
main ()
{
{
volatile F f = foo ();
f ({});
}
if (c[0] + c[1] != c[2])
__builtin_abort ();
}
>From gcc-bugs-return-624213-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 17:40:51 2018
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Subject: [Bug middle-end/88345] -Os overrides -falign-functions=N on the command line
Date: Tue, 04 Dec 2018 17:40:00 -0000
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Yes, I do mean -falign-functions, sorry. I both misread and mistyped -finline-
as -falign-.
I do think that when a user specifies -falign-functions=N on the command line
with any optimization option it's likely because they want functions aligned on
the specified boundary, with all the other benefits of -Os. That's the effect
they get with -O2, and I think it should work the same at all optimization
levels, except perhaps -O0 where users usually have minimal expectations about
the efficiency of the executable.
Otherwise, when GCC makes the decision to disregard an option specified on the
command line that it could otherwise honor, especially one that affects code
generation, I would expect it to print a warning to let the user know. (I
realize there are cases where it's not possible, but this one doesn't seem like
one of them -- its should be easy to honor the option.)
However it works, though, the manual should make it clear. Saying that "-Os
enables optimizations other than -falign-functions" doesn't tell the reader how
functions are actually aligned. The documentation of -falign-functions should
also mention which of the forms of the option is enabled at -O2 and -O3 (i.e.,
make it clear it's -falign-functions with no argument). Neither users nor GCC
developers should have to reverse-engineer GCC to know what effect to expect.
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Subject: [Bug middle-end/88345] -Os overrides -falign-functions=N on the command line
Date: Tue, 04 Dec 2018 17:44:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
My comment was about -finline-*.
>From gcc-bugs-return-624214-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 17:44:29 2018
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Subject: [Bug fortran/71703] [7/8/9 Regression] [OOP] ICE in wide_int_to_tree, at tree.c:1488
Date: Tue, 04 Dec 2018 17:44:00 -0000
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G. Steinmetz <gscfq@t-online.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gscfq@t-online.de
--- Comment #10 from G. Steinmetz <gscfq@t-online.de> ---
Update, related to pr84007.
$ gfortran-9-20181202 -c z1.f90
z1.f90:10:0:
10 | print *, same_type_as(x, y%a)
|
internal compiler error: in wide_int_to_tree_1, at tree.c:1561
0xd6bd72 wide_int_to_tree_1
../../gcc/tree.c:1561
0xd6c29b wide_int_to_tree(tree_node*, poly_int<1u,
generic_wide_int<wide_int_ref_storage<false, true> > > const&)
../../gcc/tree.c:1686
0xd6c29b build_int_cst(tree_node*, poly_int<1u, long>)
../../gcc/tree.c:1355
0x70813e gfc_conv_same_type_as
../../gcc/fortran/trans-intrinsic.c:8285
0x718a10 gfc_conv_intrinsic_function(gfc_se*, gfc_expr*)
../../gcc/fortran/trans-intrinsic.c:9388
0x6fd014 gfc_conv_function_expr
../../gcc/fortran/trans-expr.c:6905
0x6f166a gfc_conv_expr(gfc_se*, gfc_expr*)
../../gcc/fortran/trans-expr.c:8039
0x6f7115 gfc_conv_expr_reference(gfc_se*, gfc_expr*, bool)
../../gcc/fortran/trans-expr.c:8184
0x71e257 gfc_trans_transfer(gfc_code*)
../../gcc/fortran/trans-io.c:2584
0x6c2dc7 trans_code
../../gcc/fortran/trans.c:2038
0x71bd4e build_dt
../../gcc/fortran/trans-io.c:2026
0x6c2da7 trans_code
../../gcc/fortran/trans.c:2010
0x6ea3d4 gfc_generate_function_code(gfc_namespace*)
../../gcc/fortran/trans-decl.c:6509
0x676b06 translate_all_program_units
../../gcc/fortran/parse.c:6128
0x676b06 gfc_parse_file()
../../gcc/fortran/parse.c:6331
0x6bf5ff gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
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Subject: [Bug lto/88297] [9 Regression] Assembler Error: symbol `_Z41__static_initialization_and_destruction_0ii.constprop.0' is already defined
Date: Tue, 04 Dec 2018 17:46:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
252.eon in SPEC CPU 2000 builds OK with r266780.
>From gcc-bugs-return-624216-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 17:46:28 2018
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Subject: [Bug fortran/84007] ICE with same_type_as with CLASS entity
Date: Tue, 04 Dec 2018 17:46:00 -0000
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G. Steinmetz <gscfq@t-online.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gscfq@t-online.de
--- Comment #2 from G. Steinmetz <gscfq@t-online.de> ---
Update, related to pr71703.
$ gfortran-9-20181202 -c pr84007.f90
pr84007.f90:17:0:
17 | results = same_type_as(lp, obj%p)
|
internal compiler error: in wide_int_to_tree_1, at tree.c:1561
0xd6bd72 wide_int_to_tree_1
../../gcc/tree.c:1561
0xd6c29b wide_int_to_tree(tree_node*, poly_int<1u,
generic_wide_int<wide_int_ref_storage<false, true> > > const&)
../../gcc/tree.c:1686
0xd6c29b build_int_cst(tree_node*, poly_int<1u, long>)
../../gcc/tree.c:1355
0x70813e gfc_conv_same_type_as
../../gcc/fortran/trans-intrinsic.c:8285
0x718a10 gfc_conv_intrinsic_function(gfc_se*, gfc_expr*)
../../gcc/fortran/trans-intrinsic.c:9388
0x6fd014 gfc_conv_function_expr
../../gcc/fortran/trans-expr.c:6905
0x6f166a gfc_conv_expr(gfc_se*, gfc_expr*)
../../gcc/fortran/trans-expr.c:8039
0x6ffd39 gfc_trans_assignment_1
../../gcc/fortran/trans-expr.c:10248
0x6c2b0f trans_code
../../gcc/fortran/trans.c:1822
0x6ea3d4 gfc_generate_function_code(gfc_namespace*)
../../gcc/fortran/trans-decl.c:6509
0x676b06 translate_all_program_units
../../gcc/fortran/parse.c:6128
0x676b06 gfc_parse_file()
../../gcc/fortran/parse.c:6331
0x6bf5ff gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
>From gcc-bugs-return-624219-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 17:49:31 2018
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Subject: [Bug fortran/88356] [9 Regression] ICE with -Werror in reduce_binary_ac, at fortran/arith.c:1318 (and others)
Date: Tue, 04 Dec 2018 17:49:00 -0000
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--- Comment #1 from G. Steinmetz <gscfq@t-online.de> ---
$ cat z2.f90
program p
integer :: z(1) = reshape([nint([2.0])], [1])
end
$ cat z3.f90
program p
integer, parameter :: z(2) = [1,2]
print *, any(abs(bessel_jn(z, 1.0) - bessel_jn(z, 1.0)) > epsilon(0.0))
end
$ cat z4.f90
program p
character(3), parameter :: z(2) = 'abc'
if (any(len_trim(z) /= [3,3])) stop
end
$ gfortran-9-20181202 -c z2.f90 -Werror -Wundef
f951: Error: command line option '-Wundef' is valid for C/C++/ObjC/ObjC++ but
not for Fortran [-Werror]
f951: internal compiler error: Segmentation fault
0xb2ec9f crash_signal
../../gcc/toplev.c:326
0x621066 check_null
../../gcc/fortran/expr.c:2691
0x621066 gfc_check_init_expr(gfc_expr*)
../../gcc/fortran/expr.c:2792
0x5ed0b5 check_constructor
../../gcc/fortran/array.c:1429
#...
$ gfortran-9-20181202 -c z3.f90 -Werror -Wundef
f951: Error: command line option '-Wundef' is valid for C/C++/ObjC/ObjC++ but
not for Fortran [-Werror]
f951: internal compiler error: Segmentation fault
0xb2ec9f crash_signal
../../gcc/toplev.c:326
0x5e9362 reduce_binary_aa
../../gcc/fortran/arith.c:1408
#...
$ gfortran-9-20181202 -c z4.f90 -Werror -Wundef
f951: Error: command line option '-Wundef' is valid for C/C++/ObjC/ObjC++ but
not for Fortran [-Werror]
f951: internal compiler error: Segmentation fault
0xb2ec9f crash_signal
../../gcc/toplev.c:326
0x138b3c0 splay_tree_min
../../libiberty/splay-tree.c:487
0x6007cd gfc_constructor_first(splay_tree_s*)
../../gcc/fortran/constructor.c:234
0x5e927a reduce_binary_aa
../../gcc/fortran/arith.c:1388
#...
>From gcc-bugs-return-624218-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 17:49:06 2018
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Subject: [Bug fortran/88356] New: [9 Regression] ICE with -Werror in reduce_binary_ac, at fortran/arith.c:1318 (and others)
Date: Tue, 04 Dec 2018 17:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88356
Bug ID: 88356
Summary: [9 Regression] ICE with -Werror in reduce_binary_ac,
at fortran/arith.c:1318 (and others)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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A combination of -Werror with some options like -Wundef, -Wswitch
or others gives ICEs. This changed between 20180624 and 20180708.
$ cat z1.f90
program p
print *, any(abs([1.0]) > epsilon(0.0))
end
$ gfortran-8 -c z1.f90 -Werror -Wundef
f951: Error: command line option '-Wundef' is valid for C/C++/ObjC/ObjC++ but
not for Fortran [-Werror]
f951: all warnings being treated as errors
$ gfortran-9-20181202 -c z1.f90 -Werror -Wundef
f951: Error: command line option '-Wundef' is valid for C/C++/ObjC/ObjC++ but
not for Fortran [-Werror]
f951: internal compiler error: Segmentation fault
0xb2ec9f crash_signal
../../gcc/toplev.c:326
0x5e915f reduce_binary_ac
../../gcc/fortran/arith.c:1318
0x5e91f2 reduce_binary_ac
../../gcc/fortran/arith.c:1305
0x5e9344 reduce_binary
../../gcc/fortran/arith.c:1431
0x5e967b eval_intrinsic
../../gcc/fortran/arith.c:1606
0x6220f9 simplify_intrinsic_op
../../gcc/fortran/expr.c:1174
0x6220f9 gfc_simplify_expr(gfc_expr*, int)
../../gcc/fortran/expr.c:2142
0x68e353 resolve_operator
../../gcc/fortran/resolve.c:4242
0x68e353 gfc_resolve_expr(gfc_expr*)
../../gcc/fortran/resolve.c:6825
0x69023f resolve_actual_arglist
../../gcc/fortran/resolve.c:1918
0x690a08 resolve_function
../../gcc/fortran/resolve.c:3157
0x68dcad gfc_resolve_expr(gfc_expr*)
../../gcc/fortran/resolve.c:6832
0x685ceb gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:11262
0x6959bf gfc_resolve_blocks(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:10302
0x685e79 gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:11252
0x688b0f resolve_codes
../../gcc/fortran/resolve.c:16704
0x688bde gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16739
0x676967 resolve_all_program_units
../../gcc/fortran/parse.c:6067
0x676967 gfc_parse_file()
../../gcc/fortran/parse.c:6317
0x6bf5ff gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
>From gcc-bugs-return-624220-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 17:51:45 2018
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Subject: [Bug fortran/83865] ICE in wide_int_to_tree_1, at tree.c:1567
Date: Tue, 04 Dec 2018 17:51:00 -0000
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--- Comment #3 from G. Steinmetz <gscfq@t-online.de> ---
Update :
$ gfortran-9-20181202 -c z1.f90
z1.f90:3:0:
3 | allocate (z, source=[''])
|
internal compiler error: in wide_int_to_tree_1, at tree.c:1561
0xd6bd72 wide_int_to_tree_1
../../gcc/tree.c:1561
0xd6c29b wide_int_to_tree(tree_node*, poly_int<1u,
generic_wide_int<wide_int_ref_storage<false, true> > > const&)
../../gcc/tree.c:1686
0xd6c29b build_int_cst(tree_node*, poly_int<1u, long>)
../../gcc/tree.c:1355
0x6c46ee gfc_allocate_allocatable(stmtblock_t*, tree_node*, tree_node*,
tree_node*, tree_node*, tree_node*, tree_node*, tree_node*, gfc_expr*, int)
../../gcc/fortran/trans.c:795
0x7326da gfc_trans_allocate(gfc_code*)
../../gcc/fortran/trans-stmt.c:6444
0x6c2d27 trans_code
../../gcc/fortran/trans.c:1990
0x6ea3d4 gfc_generate_function_code(gfc_namespace*)
../../gcc/fortran/trans-decl.c:6509
0x676b06 translate_all_program_units
../../gcc/fortran/parse.c:6128
0x676b06 gfc_parse_file()
../../gcc/fortran/parse.c:6331
0x6bf5ff gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
>From gcc-bugs-return-624221-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 17:53:08 2018
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Subject: [Bug fortran/88357] New: ICE in parse_associate, at fortran/parse.c:4568
Date: Tue, 04 Dec 2018 17:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88357
Bug ID: 88357
Summary: ICE in parse_associate, at fortran/parse.c:4568
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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With invalid code, down to at least gcc-5 :
$ cat z1.f90
program p
type t
end type
class(t) :: x[*]
associate (y => x)
end associate
end
$ gfortran-9-20181202 -c z1.f90 -fcoarray=single
f951: internal compiler error: Segmentation fault
0xc8f33f crash_signal
../../gcc/toplev.c:326
0x69b4b9 parse_associate
../../gcc/fortran/parse.c:4568
0x69b4b9 parse_executable
../../gcc/fortran/parse.c:5319
0x69bc4f parse_progunit
../../gcc/fortran/parse.c:5700
0x69d229 gfc_parse_file()
../../gcc/fortran/parse.c:6214
0x6e6a9f gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
---
$ cat z2.f90
program p
type t
end type
class(t), allocatable :: x[:]
associate (y => x)
end associate
end
$ gfortran-9-20181202 -c z2.f90 -fcoarray=single
f951: internal compiler error: Segmentation fault
0xb2ec9f crash_signal
../../gcc/toplev.c:326
0x684b1b resolve_assoc_var
../../gcc/fortran/resolve.c:8750
0x689231 resolve_symbol
../../gcc/fortran/resolve.c:14738
0x6acea2 do_traverse_symtree
../../gcc/fortran/symbol.c:4151
0x683c64 resolve_types
../../gcc/fortran/resolve.c:16623
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../../gcc/fortran/resolve.c:16737
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../../gcc/fortran/resolve.c:10163
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../../gcc/fortran/resolve.c:11493
0x688b0f resolve_codes
../../gcc/fortran/resolve.c:16704
0x688bde gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16739
0x676967 resolve_all_program_units
../../gcc/fortran/parse.c:6067
0x676967 gfc_parse_file()
../../gcc/fortran/parse.c:6317
0x6bf5ff gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
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Subject: [Bug fortran/88357] ICE in parse_associate, at fortran/parse.c:4568
Date: Tue, 04 Dec 2018 17:53:00 -0000
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--- Comment #1 from G. Steinmetz <gscfq@t-online.de> ---
Related non-coarray version :
$ cat z3.f90
program p
type t
end type
class(t) :: x
associate (y => x)
end associate
end
$ gfortran-9-20181202 -c z3.f90
z3.f90:4:16:
4 | class(t) :: x
| 1
Error: CLASS variable 'x' at (1) must be dummy, allocatable or pointer
f951: internal compiler error: Segmentation fault
0xc8f33f crash_signal
../../gcc/toplev.c:326
0x6ab3c3 resolve_assoc_var
../../gcc/fortran/resolve.c:8718
0x6afb71 resolve_symbol
../../gcc/fortran/resolve.c:14738
0x6d37e2 do_traverse_symtree
../../gcc/fortran/symbol.c:4151
0x6aa5a4 resolve_types
../../gcc/fortran/resolve.c:16623
0x6af50c gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16737
0x6accab gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16724
0x6accab resolve_block_construct
../../gcc/fortran/resolve.c:10163
0x6accab gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:11493
0x6af44f resolve_codes
../../gcc/fortran/resolve.c:16704
0x6af51e gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16739
0x69d2a7 resolve_all_program_units
../../gcc/fortran/parse.c:6067
0x69d2a7 gfc_parse_file()
../../gcc/fortran/parse.c:6317
0x6e6a9f gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
>From gcc-bugs-return-624223-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 17:57:29 2018
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Subject: [Bug tree-optimization/87360] [8/9 Regression] ICE in remove_redundant_iv_tests at gcc/tree-ssa-loop-ivcanon.c:571 since r255467
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45153
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45153&action=edit
gcc9-pr87360.patch
Untested fix.
>From gcc-bugs-return-624224-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 18:04:51 2018
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From: "blitzrakete at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/88358] New: variable template definition taken as function template declaration with implicit typename
Date: Tue, 04 Dec 2018 18:04:00 -0000
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Bug ID: 88358
Summary: variable template definition taken as function
template declaration with implicit typename
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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Consider the following (compiled with `-std=c++2a`):
template <typename T>
void f(T::type); // ill-formed, gcc accepts
gcc seems to think that this is a function template declaration. In fact, it is
not, it's an ill-formed variable template. It's also a regression I think in a
way
template <typename T>
int pi(T::your_pi); // variable template, but gcc trunk thinks this is a
function template
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Subject: [Bug target/87288] [8 Regression] Segfault after const_cast with "-O2 -ftree-loop-vectorize" but _without_ "-mavx"
Date: Tue, 04 Dec 2018 18:10:00 -0000
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----------------------------------------------------------------------------
CC| |kilian.verhetsel@uclouvain.
| |be
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 87320 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-624226-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 18:10:31 2018
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Subject: [Bug tree-optimization/87320] [8/9 Regression] Last iteration of vectorized loop not executed when peeling for gaps
Date: Tue, 04 Dec 2018 18:10:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 87288 ***
>From gcc-bugs-return-624227-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 18:17:53 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/87980] ICE in gfc_conv_descriptor_data_get, at fortran/trans-array.c for assignment on allocatable polymorphic variable
Date: Tue, 04 Dec 2018 18:17:00 -0000
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--- Comment #4 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Is there any update on this?
>From gcc-bugs-return-624228-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 18:38:52 2018
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Subject: [Bug tree-optimization/86637] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:293
Date: Tue, 04 Dec 2018 18:38:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This got fixed (or made latent?) with r265840. David, do we want to add the
testcase to the testsuite and close?
>From gcc-bugs-return-624229-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 18:56:17 2018
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Subject: [Bug fortran/88357] ICE in parse_associate, at fortran/parse.c:4568
Date: Tue, 04 Dec 2018 18:56:00 -0000
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--- Comment #2 from kargl at gcc dot gnu.org ---
(In reply to G. Steinmetz from comment #1)
>
> Related non-coarray version :
>
>
> $ cat z3.f90
> program p
> type t
> end type
> class(t) :: x
> associate (y => x)
> end associate
> end
>
>
> $ gfortran-9-20181202 -c z3.f90
> z3.f90:4:16:
>
> 4 | class(t) :: x
> | 1
> Error: CLASS variable 'x' at (1) must be dummy, allocatable or pointer
> f951: internal compiler error: Segmentation fault
> 0xc8f33f crash_signal
> ../../gcc/toplev.c:326
> 0x6ab3c3 resolve_assoc_var
> ../../gcc/fortran/resolve.c:8718
Seems to be multiple bugs conflated into one report.
Index: gcc/fortran/resolve.c
===================================================================
--- gcc/fortran/resolve.c (revision 266766)
+++ gcc/fortran/resolve.c (working copy)
@@ -8715,7 +8715,8 @@ resolve_assoc_var (gfc_symbol* sym, bool resolve_targe
{
/* target's rank is 0, but the type of the sym is still array valued,
which has to be corrected. */
- if (sym->ts.type == BT_CLASS && CLASS_DATA (sym)->as)
+ if (sym->ts.type == BT_CLASS
+ && CLASS_DATA (sym) && CLASS_DATA (sym)->as)
{
gfc_array_spec *as;
symbol_attribute attr;
>From gcc-bugs-return-624230-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 19:08:22 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86648] [9 Regression] ICE on class template argument deduction
Date: Tue, 04 Dec 2018 19:08:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-12-04
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase:
template <typename> class A;
template <class T> struct B { static A a{T::a}; };
void foo () { B<int> a; }
Started to ICE with -std=c++17 -g when this started to be accepted in r260150.
Or e.g.
template <typename> struct A {};
template <class T> struct B { static A a{T::a}; };
template <typename T> struct C { static A<T> a; };
void foo () { B<C<int>> a; }
ICEs too.
>From gcc-bugs-return-624231-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 19:18:43 2018
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Subject: [Bug fortran/88357] ICE in parse_associate, at fortran/parse.c:4568
Date: Tue, 04 Dec 2018 19:18:00 -0000
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
--- Comment #3 from kargl at gcc dot gnu.org ---
(In reply to G. Steinmetz from comment #0)
> With invalid code, down to at least gcc-5 :
>
>
> $ cat z1.f90
> program p
> type t
> end type
> class(t) :: x[*]
> associate (y => x)
> end associate
> end
>
>
> $ gfortran-9-20181202 -c z1.f90 -fcoarray=single
> f951: internal compiler error: Segmentation fault
> 0xc8f33f crash_signal
> ../../gcc/toplev.c:326
> 0x69b4b9 parse_associate
> ../../gcc/fortran/parse.c:4568
Index: gcc/fortran/parse.c
===================================================================
--- gcc/fortran/parse.c (revision 266766)
+++ gcc/fortran/parse.c (working copy)
@@ -4563,7 +4563,7 @@ parse_associate (void)
else
rank = a->target->rank;
/* When the rank is greater than zero then sym will be an array. */
- if (sym->ts.type == BT_CLASS)
+ if (sym->ts.type == BT_CLASS && CLASS_DATA (sym))
{
if ((!CLASS_DATA (sym)->as && rank != 0)
|| (CLASS_DATA (sym)->as
Index: gcc/fortran/class.c
===================================================================
--- gcc/fortran/class.c (revision 266766)
+++ gcc/fortran/class.c (working copy)
@@ -72,14 +72,18 @@ along with GCC; see the file COPYING3. If not see
static void
insert_component_ref (gfc_typespec *ts, gfc_ref **ref, const char * const
name)
{
- gfc_symbol *type_sym;
gfc_ref *new_ref;
+ int wcnt, ecnt;
gcc_assert (ts->type == BT_DERIVED || ts->type == BT_CLASS);
- type_sym = ts->u.derived;
- gfc_find_component (type_sym, name, true, true, &new_ref);
+ gfc_find_component (ts->u.derived, name, true, true, &new_ref);
+
+ gfc_get_errors (&wcnt, &ecnt);
+ if (ecnt > 0 && !new_ref)
+ return;
gcc_assert (new_ref->u.c.component);
+
while (new_ref->next)
new_ref = new_ref->next;
new_ref->next = *ref;
>From gcc-bugs-return-624232-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 19:29:05 2018
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Subject: =?UTF-8?B?W0J1ZyBjKysvODgxODRdIFs5IFJlZ3Jlc3Npb25dIElDRSBvbiAoaW52YWxp?= =?UTF-8?B?ZCkgQysrIGNvZGUgd2hlbiBjb21waWxlZCB3aXRoIC1zdGQ9YysrMmE6IHVu?= =?UTF-8?B?ZXhwZWN0ZWQgZXhwcmVzc2lvbiDigJhmPFQ+4oCZIG9mIGtpbmQgdGVtcGxh?= =?UTF-8?B?dGVfaWRfZXhwcg==?Date: Tue, 04 Dec 2018 19:29:00 -0000
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Tue Dec 4 19:28:27 2018
New Revision: 266793
URL: https://gcc.gnu.org/viewcvs?rev=266793&root=gcc&view=rev
Log:
PR c++/88184 - ICE when treating name as template-name.
* pt.c (lookup_template_function): Always build the TEMPLATE_ID_EXPR
with unknown_type_node.
* g++.dg/cpp2a/fn-template17.C: New test.
* g++.dg/cpp2a/fn-template18.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/fn-template17.C
trunk/gcc/testsuite/g++.dg/cpp2a/fn-template18.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-624234-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 19:39:58 2018
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Subject: [Bug target/88353] AVX512 instructions on macOS using Xcode Clang's assembler needs extra flags
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
I think this is a dup of something but I can't seem to find it right now...
>From gcc-bugs-return-624235-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 19:42:30 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/88188] ICE in print_operand, at config/rs6000/rs6000.c
Date: Tue, 04 Dec 2018 19:42:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Dec 4 19:41:52 2018
New Revision: 266794
URL: https://gcc.gnu.org/viewcvs?rev=266794&root=gcc&view=rev
Log:
PR target/88188
* config/rs6000/rs6000.c (ccr_bit): Return -1 instead of assertion
failures.
(print_operand): Use REG_P instead of GET_CODE == REG.
<case 'D'>: Also check CR_REGNO_P (REGNO (x)).
<case 't'>: Likewise. Remove GET_MODE check.
* config/rs6000/rs6000.md (scc patterns): Assert ccr_bit didn't
return -1.
* gcc.target/powerpc/pr88188-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/powerpc/pr88188-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000.c
trunk/gcc/config/rs6000/rs6000.md
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-624236-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 19:47:49 2018
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Subject: [Bug target/87496] ICE in aggregate_value_p at gcc/function.c:2046
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
URL|https://gcc.gnu.org/ml/gcc- |https://gcc.gnu.org/ml/gcc-
|patches/2018-11/msg02367.ht |patches/2018-12/msg00228.ht
|ml |ml
Resolution|FIXED |---
--- Comment #9 from Peter Bergner <bergner at gcc dot gnu.org> ---
Reopening, since there was a slight bug in the committed fix, in that we
accidentally disallowed -mabi=ibmlongdouble from being used without full ISA
2.06 support, which is wrong. I have an updated patch submitted.
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Subject: [Bug c++/88358] variable template definition taken as function template declaration with implicit typename
Date: Tue, 04 Dec 2018 19:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88358
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-12-04
CC| |mpolacek at gcc dot gnu.org
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I think something similar was discussed on the core reflector.
Well, mine.
>From gcc-bugs-return-624238-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 20:10:12 2018
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Subject: [Bug fortran/88356] [9 Regression] ICE with -Werror in reduce_binary_ac, at fortran/arith.c:1318 (and others)
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kargl at gcc dot gnu.org changed:
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--- Comment #2 from kargl at gcc dot gnu.org ---
Add -fmax-errors=1 to your command line.
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Subject: [Bug c/88359] New: internal compiler error: in push_reload, at reload.c:1360
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Bug ID: 88359
Summary: internal compiler error: in push_reload, at
reload.c:1360
Product: gcc
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Created attachment 45154
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45154&action=edit
preprocessed source
See attachments for required information.
The error occurs as part of a cmake build system; the output as recorded in the
attachment contains the full commandline and the full GCC version.
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Subject: [Bug c/88359] internal compiler error: in push_reload, at reload.c:1360
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Geert linders <geert.linders at hotmail dot com> changed:
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--- Comment #1 from Geert linders <geert.linders at hotmail dot com> ---
Created attachment 45155
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commanline and GGC version
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Subject: [Bug fortran/88304] [9 Regression] ICE in use_pointer_in_frame, at tree-nested.c:267
Date: Tue, 04 Dec 2018 21:11:00 -0000
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--- Comment #5 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Richard Biener from comment #4)
> Confirmed. We do not expect
>
> CHAIN.10->gattr = {CLOBBER};
>
> I believe the FE inserts these now to better share stack slots:
Thanks for pointing to the gimple. Looking at it with my zero knowledge,
it looks in addition to a wrong code issue. With this is mind, I further
reduced the complete testcase to this:
MODULE mo_feedbk
implicit none
type t_fileinfo
integer :: nex = -1
integer :: pad = 0
end type t_fileinfo
interface nf90_get_att
module procedure nf90_get_att_one_FourByteInt
end interface
contains
function nf90_get_att_one_FourByteInt(ncid, varid, name, values)
integer, intent( in) :: ncid, varid
character(len=*), intent( in) :: name
integer , intent(out) :: values
integer :: nf90_get_att_one_FourByteInt
end function nf90_get_att_one_FourByteInt
subroutine convert_cof ()
integer :: dummy = -1
! type(t_fileinfo), save :: gattr ! No ICE
type(t_fileinfo) :: gattr ! ICE
contains
subroutine open_input
integer :: rc
rc = nf90_get_att (0, 0, "experiment", dummy ) ! OK
rc = nf90_get_att (0, 0, "experiment", gattr%nex ) ! ICE
end subroutine open_input
end subroutine convert_cof
end module mo_feedbk
A derived type with component initialization (like t_fileinfo) should
implicitly get the SAVE attribute, which appears to be lost here.
Adding it explicitly removes the ICE. Thus a front-end issue?
>From gcc-bugs-return-624242-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 21:21:49 2018
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Subject: [Bug target/88359] internal compiler error: in push_reload, at reload.c:1360
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
4.9.x is no longer supported, can you try a newer version of GCC?
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Subject: [Bug target/88359] internal compiler error: in push_reload, at reload.c:1360
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--- Comment #3 from Geert linders <geert.linders at hotmail dot com> ---
The same problem (with the same GCC version) has been reported in:
https://www.avrfreaks.net/forum/avr-gcc-492-crash-internal-compiler-error-pushreload
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/82967] "did you mean" suggestions are way too suggestive
Date: Tue, 04 Dec 2018 21:33:00 -0000
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--- Comment #12 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Tue Dec 4 21:33:08 2018
New Revision: 266798
URL: https://gcc.gnu.org/viewcvs?rev=266798&root=gcc&view=rev
Log:
spellcheck.c: add another selftest for PR c/82967
This adds another testcase for overzealous spellchecker suggestions,
reported on IRC.
gcc/ChangeLog:
PR c/82967
* spellcheck.c (selftest::test_suggestions): Add another
assertion.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/spellcheck.c
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Subject: [Bug fortran/88304] [9 Regression] ICE in use_pointer_in_frame, at tree-nested.c:267
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--- Comment #6 from kargl at gcc dot gnu.org ---
(In reply to Harald Anlauf from comment #5)
>
> A derived type with component initialization (like t_fileinfo) should
> implicitly get the SAVE attribute, which appears to be lost here.
> Adding it explicitly removes the ICE. Thus a front-end issue?
The F2018 standard (n2146.pdf, p. 78) says
Explicit initialization in a type declaration statement (8.2)
overrides default initialization (see NOTE 7.32). Unlike explicit
initialization, default initialization does not imply that the object
has the SAVE attribute.
HTH
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88304] [9 Regression] ICE in use_pointer_in_frame, at tree-nested.c:267
Date: Tue, 04 Dec 2018 21:55:00 -0000
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--- Comment #7 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to kargl from comment #6)
> (In reply to Harald Anlauf from comment #5)
> >
> > A derived type with component initialization (like t_fileinfo) should
> > implicitly get the SAVE attribute, which appears to be lost here.
> > Adding it explicitly removes the ICE. Thus a front-end issue?
>
> The F2018 standard (n2146.pdf, p. 78) says
>
> Explicit initialization in a type declaration statement (8.2)
> overrides default initialization (see NOTE 7.32). Unlike explicit
> initialization, default initialization does not imply that the object
> has the SAVE attribute.
>
> HTH
Thanks for pointing this out. And replacing
type(t_fileinfo), save :: gattr ! No ICE
by
type(t_fileinfo) :: gattr = t_fileinfo() ! No ICE
produces identical code. So I take back the possible wrong-code issue.
Only the ICE remains.
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Subject: [Bug target/88359] internal compiler error: in push_reload, at reload.c:1360
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--- Comment #4 from Geert linders <geert.linders at hotmail dot com> ---
Workaround: add compiler option '-fno-move-loop-invariants'
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Subject: [Bug target/88359] internal compiler error: in push_reload, at reload.c:1360
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--- Comment #5 from Geert linders <geert.linders at hotmail dot com> ---
Workaround 2: add the following in front of the offending function:
#pragma GCC optimize("no-move-loop-invariants")
This has the advantage that it only affects the offending function and not the
rest of the source file(s).
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Subject: [Bug c++/88320] GCC suggests variables that don't exist yet
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--- Comment #6 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
I did a little investigation of this.
A tweaked reproducer, for both C and C++:
int test (void)
{
int vresults1 = 0;
int aresult = aresults +1;
return aresult;
}
I think that we should omit any decls that are being initialized when
considering possible suggestions to offer; hence we would suggest "vresults1"
as the closest match for "aresults" within the initializer.
I believe this is fairly easy to implement for the C frontend: the C FE has a
global "constructor_decl" and a chain of further "in-flight" decls in
"initializer_stack", set up in start_init, and cleared by finish_init:
(gdb) p constructor_decl
$4 = <var_decl 0x7ffff7ffbb40 aresult>
So we should exclude those decls from suggestions.
Something similar is probably doable to the C++ FE, but there doesn't seem to
be an equivalent handy record of which decls are being initialized within the
parser. There is a start_decl and a cp_finish_decl, but they don't seem to be
exact opposites.
I'll continue to poke at this.
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Subject: [Bug c/88360] New: see readme.txt for full description
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Created attachment 45156
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45156&action=edit
zip file with full description and support files
avr-gcc compiler segmentation fault
see readme.txt for full description
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Target| |avr
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-12-04
Component|c |target
Version|unknown |5.4.0
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
GCC 5.4 is no longer supported or maintained (and neither is any GCC 6.x
release).
Please try to reproduce this with a current release.
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Subject: [Bug rtl-optimization/88317] ICE: Segmentation fault (in split_reg -> bitmap_set_bit -> bitmap_list_link_element)
Date: Tue, 04 Dec 2018 22:50:00 -0000
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--- Comment #4 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Tue Dec 4 22:50:14 2018
New Revision: 266803
URL: https://gcc.gnu.org/viewcvs?rev=266803&root=gcc&view=rev
Log:
2018-12-04 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/88317
* lra-constraints.c (split_reg): Don't set up check_only_regs if
we are outside the inheritance pass.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-constraints.c
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Subject: [Bug c++/88358] variable template definition taken as function template declaration with implicit typename
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Nicolas Lesser from comment #0)
> It's also a regression I think in a way
Yes, this started to be accepted (for c++2a mode only) with Marek's r266710.
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Subject: [Bug rtl-optimization/88317] ICE: Segmentation fault (in split_reg -> bitmap_set_bit -> bitmap_list_link_element)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88317
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |law at redhat dot com
Resolution|--- |FIXED
--- Comment #5 from Jeffrey A. Law <law at redhat dot com> ---
Fixed by Vlad's change on the trunk.
>From gcc-bugs-return-624255-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Dec 04 23:28:16 2018
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Subject: [Bug tree-optimization/87320] [8/9 Regression] Last iteration of vectorized loop not executed when peeling for gaps
Date: Tue, 04 Dec 2018 23:28:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Dec 4 23:27:39 2018
New Revision: 266805
URL: https://gcc.gnu.org/viewcvs?rev=266805&root=gcc&view=rev
Log:
PR tree-optimization/87320
* gcc.dg/pr87320.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr87320.c
Modified:
trunk/gcc/testsuite/ChangeLog
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/88361] New: gcc does not unroll loop
Date: Tue, 04 Dec 2018 23:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88361
Bug ID: 88361
Summary: gcc does not unroll loop
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
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[code]
#include "immintrin.h"
#define SIZE 9
int src[SIZE][SIZE] __attribute__((aligned(16)));
int dst1[SIZE][SIZE] __attribute__((aligned(16)));
int dst2[SIZE][SIZE] __attribute__((aligned(16)));
void test1()
{
for (int i = 0; i < SIZE; ++i)
{
for (int j = 0; j < SIZE; ++j)
{
dst1[i][j] = src[i][j];
dst2[i][j] = 1u << src[i][j];
}
}
}
#pragma GCC push_options
#pragma GCC optimize ("unroll-loops")
void test2()
{
int n = 0;
for (; n < SIZE*SIZE-3; n += 4)
{
// Copy data
__m128i v = _mm_load_si128((const __m128i*)(&src[0][0] + n));
_mm_store_si128((__m128i*)(&dst1[0][0] + n), v);
// Calculate bitmasks
v = _mm_sllv_epi32(_mm_set1_epi32(1), v);
_mm_store_si128((__m128i*)(&dst2[0][0] + n), v);
}
for (; n < SIZE*SIZE; n++)
{
int x = *(&src[0][0] + n);
*((&dst1[0][0] + n)) = x;
*((&dst2[0][0] + n)) = 1 << x;
}
}
#pragma GCC pop_options
[/code]
When code above is compiled using gcc 8.2 with -O3 -mavx2 -mprefer-avx128,
loops in test1() are unrolled and vectorized as expected. However in test2()
loops are not unrolled completely, even with unroll pragma:
[asm]
test2():
mov eax, OFFSET FLAT:dst1
mov esi, OFFSET FLAT:src
mov ecx, 40
xor edx, edx
mov rdi, rax
vmovdqa xmm1, XMMWORD PTR .LC0[rip]
rep movsq
.L4:
vpsllvd xmm0, xmm1, XMMWORD PTR src[rdx]
lea rax, [rdx+16]
vmovaps XMMWORD PTR dst2[rdx], xmm0
vpsllvd xmm0, xmm1, XMMWORD PTR src[rdx+16]
vmovaps XMMWORD PTR dst2[rax], xmm0
vpsllvd xmm0, xmm1, XMMWORD PTR src[rdx+32]
vmovaps XMMWORD PTR dst2[rdx+32], xmm0
vpsllvd xmm0, xmm1, XMMWORD PTR src[rax+32]
lea rdx, [rax+144]
vmovaps XMMWORD PTR dst2[rax+32], xmm0
vpsllvd xmm0, xmm1, XMMWORD PTR src[rax+48]
vmovaps XMMWORD PTR dst2[rax+48], xmm0
vpsllvd xmm0, xmm1, XMMWORD PTR src[rax+64]
vmovaps XMMWORD PTR dst2[rax+64], xmm0
vpsllvd xmm0, xmm1, XMMWORD PTR src[rax+80]
vmovaps XMMWORD PTR dst2[rax+80], xmm0
vpsllvd xmm0, xmm1, XMMWORD PTR src[rax+96]
vmovaps XMMWORD PTR dst2[rax+96], xmm0
vpsllvd xmm0, xmm1, XMMWORD PTR src[rax+112]
vmovaps XMMWORD PTR dst2[rax+112], xmm0
vpsllvd xmm0, xmm1, XMMWORD PTR src[rax+128]
vmovaps XMMWORD PTR dst2[rax+128], xmm0
cmp rax, 176
jne .L4
mov ecx, DWORD PTR src[rip+320]
mov eax, 1
sal eax, cl
mov DWORD PTR dst1[rip+320], ecx
mov DWORD PTR dst2[rip+320], eax
ret
[/asm]
This issue also exists in gcc 8.2 for AARCH64. I found it there first, and then
checked that on x86_64 it is also present.
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Subject: [Bug middle-end/88361] gcc does not unroll loop
Date: Tue, 04 Dec 2018 23:46:00 -0000
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--- Comment #1 from Daniel Fruzynski <bugzilla@poradnik-webmastera.com> ---
For reference, this is NEON code which I used on AARCH64:
[code]
void test2()
{
int n = 0;
for (; n < SIZE*SIZE-3; n += 4)
{
// Copy data
uint32x4_t v = vld1q_u32((uint32_t*)(&src[0][0] + n));
vst1q_u32((uint32_t*)(&dst1[0][0] + n), v);
// Calculate bitmasks
v = vshlq_u32(vdupq_n_u32(1), vreinterpretq_s32_u32(v));
vst1q_u32((uint32_t*)(&dst2[0][0] + n), v);
}
for (; n < SIZE*SIZE; n++)
{
int x = *(&src[0][0] + n);
*((&dst1[0][0] + n)) = x;
*((&dst2[0][0] + n)) = 1 << x;
}
}
[/code]
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Subject: [Bug c++/84636] internal compiler error: Segmentation fault (identifier_p()/grokdeclarator())
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--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Tue Dec 4 23:48:45 2018
New Revision: 266807
URL: https://gcc.gnu.org/viewcvs?rev=266807&root=gcc&view=rev
Log:
/cp
2018-12-04 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84636
* decl.c (grokdeclarator): Avoid crashing on an anonymous bit-field
with function type.
/testsuite
2018-12-04 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84636
* g++.dg/parse/bitfield6.C: New.
Added:
trunk/gcc/testsuite/g++.dg/parse/bitfield6.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84636] internal compiler error: Segmentation fault (identifier_p()/grokdeclarator())
Date: Tue, 04 Dec 2018 23:53:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Assignee|paolo.carlini at oracle dot com |unassigned at gcc dot gnu.org
Target Milestone|--- |9.0
--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed.
>From gcc-bugs-return-624260-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 00:02:39 2018
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Subject: [Bug tree-optimization/86637] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:293
Date: Wed, 05 Dec 2018 00:02:00 -0000
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--- Comment #4 from Arseny Solokha <asolokha at gmx dot com> ---
I still see it all the time. I'll update a testcase here.
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Subject: [Bug c++/88355] [c++20] Placeholder non-type template argument type deduction fails with custom types
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2018-12-05
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This looks like PR88092 to me. Unsure if dups or just related.
>From gcc-bugs-return-624262-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 00:59:20 2018
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/88354] Please warn on the use of a va_list argument in *printf functions instead of v*printf
Date: Wed, 05 Dec 2018 00:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88354
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
>From gcc-bugs-return-624263-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 01:24:47 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88362] New: attribute aligned silently ignored on C++ references
Date: Wed, 05 Dec 2018 01:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88362
Bug ID: 88362
Summary: attribute aligned silently ignored on C++ references
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
GCC honors the aligned attribute in just two of the three definitions below: it
silently ignores it for the reference. Clang aligns all three objects on the
same 64-byte boundary.
$ cat t.C && gcc -O2 -S -Wall -fdump-tree-optimized=/dev/stdout t.C
__attribute__ ((aligned (64))) int i = 123; // 64-byte aligned int
__attribute__ ((aligned (64))) int *p = &i; // 64-byte aligned pointer
__attribute__ ((aligned (64))) int &r = i; // 4-byte aligned reference
int fi (void) { return alignof (i); }
int fp (void) { return alignof (p); }
int fr (void) { return alignof (r); }
;; Function fi (_Z2fiv, funcdef_no=0, decl_uid=2301, cgraph_uid=1,
symbol_order=3)
fi ()
{
<bb 2> [local count: 1073741824]:
return 64;
}
;; Function fp (_Z2fpv, funcdef_no=4, decl_uid=2303, cgraph_uid=2,
symbol_order=4)
fp ()
{
<bb 2> [local count: 1073741824]:
return 64;
}
;; Function fr (_Z2frv, funcdef_no=2, decl_uid=2305, cgraph_uid=3,
symbol_order=5)
fr ()
{
<bb 2> [local count: 1073741824]:
return 4;
}
>From gcc-bugs-return-624264-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 01:26:26 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88362] attribute aligned silently ignored on C++ references
Date: Wed, 05 Dec 2018 01:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88362
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Known to fail| |4.4.7, 4.8.3, 4.9.4, 5.4.0,
| |6.3.0, 7.3.0, 8.2.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
This has never worked as expected.
>From gcc-bugs-return-624265-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 02:07:00 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/88363] New: [9 Regression] alloc_align attribute doesn't accept enumerated arguments
Date: Wed, 05 Dec 2018 02:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88363
Bug ID: 88363
Summary: [9 Regression] alloc_align attribute doesn't accept
enumerated arguments
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
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According to the manual:
The alloc_align attribute may be applied to a function that returns a pointer
and takes at least one argument of an integer type.
C defines integer types like so:
The type char, the signed and unsigned integer types, and the enumerated
types are collectively called integer types.
However, when a function argument of an enumerated type is referenced in the
alloc_align attribute GCC 9 prints a warning and ignores the attribute:
$ cat t.c && gcc -O2 -S -Wall -fdump-tree-optimized=/dev/stdout t.c
__attribute__ ((alloc_align (1))) void* fi (int);
enum A { A1 = 1, A2 = 2, A4 = 4 };
__attribute__ ((alloc_align (1))) void* fA (enum A);
void gi (void)
{
void *p = fi (A4);
if ((__UINTPTR_TYPE__)p & 3)
__builtin_abort ();
}
void gA (void)
{
void *p = fA (A4);
if ((__UINTPTR_TYPE__)p & 3)
__builtin_abort ();
}
t.c:4:50: warning: ‘alloc_align’ attribute argument value ‘1’ refers to
parameter type ‘enum A’ [-Wattributes]
4 | __attribute__ ((alloc_align (1))) void* fA (enum A);
| ^
;; Function gi (gi, funcdef_no=0, decl_uid=1914, cgraph_uid=1, symbol_order=0)
gi ()
{
<bb 2> [local count: 1073741824]:
fi (4); [tail call]
return;
}
;; Function gA (gA, funcdef_no=1, decl_uid=1918, cgraph_uid=2, symbol_order=1)
gA ()
{
void * p;
long unsigned int p.1_1;
long unsigned int _2;
<bb 2> [local count: 1073741824]:
p_5 = fA (4);
p.1_1 = (long unsigned int) p_5;
_2 = p.1_1 & 3;
if (_2 != 0)
goto <bb 3>; [0.00%]
else
goto <bb 4>; [100.00%]
<bb 3> [count: 0]:
__builtin_abort ();
<bb 4> [local count: 1073741824]:
return;
}
>From gcc-bugs-return-624266-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 02:08:40 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/88363] [9 Regression] alloc_align attribute doesn't accept enumerated arguments
Date: Wed, 05 Dec 2018 02:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88363
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The change was introduced in r266195:
r266195 | msebor | 2018-11-15 17:53:57 -0500 (Thu, 15 Nov 2018) | 50 lines
PR c++/87541 - ICE using a constant decl as an attribute alloc_size argument
PR c++/87542 - bogus error on attribute format with a named constant argument
gcc/ChangeLog:
PR c++/87541
PR c++/87542
* tree.c (type_argument_type): New function.
* tree.h (type_argument_type): Declare it.
* gcc/doc/extend.texi (alloc_align): Update and clarify.
(alloc_size, nonnull, sentinel): Same.
gcc/c-family/ChangeLog:
PR c++/87541
PR c++/87542
* c-attribs.c (positional_argument): New function.
(handle_alloc_size_attribute): Use it and simplify.
(handle_alloc_align_attribute): Same.
(handle_assume_aligned_attribute): Same.
(handle_nonnull_attribute): Same.
* c-common.c (check_function_arguments): Pass fntype to
check_function_format.
* c-common.h (check_function_format): Add an argument.
(PosArgFlags, positional_argument): Declare new type and function.
* c-format.c (decode_format_attr): Add arguments.
(check_format_string, get_constant): Same.
(convert_format_name_to_system_name): Adjust.
>From gcc-bugs-return-624267-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 02:16:14 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/88363] [9 Regression] alloc_align attribute doesn't accept enumerated arguments
Date: Wed, 05 Dec 2018 02:16:00 -0000
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Interestingly, C++ definition of /integer type/ does not include enumerated
types so there the change had the opposite effect: code that was previously
accepted now gets a warning.
Ironically, Clang accepts and optimizes the code in C mode but rejects it in
mode with:
t.c:4:30: error: 'alloc_align' attribute argument may only refer to a function
parameter of integer type
__attribute__ ((alloc_align (1))) void* fA (enum A);
^ ~~~~~~
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From: "sandra at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/56682] -fsanitize documentation
Date: Wed, 05 Dec 2018 02:39:00 -0000
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--- Comment #4 from sandra at gcc dot gnu.org ---
Is -g also recommended for the other -fsanitize= options?
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From: "sandra at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/57659] Failure in installing documentation of gcc-4.7.2
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sandra at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sandra at gcc dot gnu.org
Component|other |ada
--- Comment #3 from sandra at gcc dot gnu.org ---
Marking this as an Ada bug. A briefer summary of the bug is that gcc was
configured to build the Ada front end, but "make html" didn't build the HTML
for the Ada manual.
I'm not currently set up to build the Ada front end so I can't confirm whether
this problem still exists on trunk.
>From gcc-bugs-return-624270-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 04:27:12 2018
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Subject: [Bug tree-optimization/86637] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:293
Date: Wed, 05 Dec 2018 04:27:00 -0000
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--- Comment #5 from Arseny Solokha <asolokha at gmx dot com> ---
1.
% cat njcltcfr.c
void
te (void)
{
}
int
main (void)
{
return 0;
}
% gcc-9.0.0-alpha20181202 -O1 -fsave-optimization-record -ftree-slp-vectorize
--param ggc-min-expand=0 --param ggc-min-heapsize=1024 -c njcltcfr.c
during GIMPLE pass: slp
njcltcfr.c: In function 'main':
njcltcfr.c:7:1: internal compiler error: tree check: expected block, have
<invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:285
7 | main (void)
| ^~~~
0x6dd3f7 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree.c:9757
0x65f661 tree_check(tree_node*, char const*, int, char const*, tree_code)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree.h:3154
0x65f661 optrecord_json_writer::inlining_chain_to_json(unsigned int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/optinfo-emit-json.cc:285
0xc14b1a optrecord_json_writer::optinfo_to_json(optinfo const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/optinfo-emit-json.cc:419
0xc14b48 optrecord_json_writer::add_record(optinfo const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/optinfo-emit-json.cc:141
0x94bc42 dump_context::emit_optinfo(optinfo const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/dumpfile.c:1207
0x94bc42 dump_context::end_any_optinfo()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/dumpfile.c:1193
0x94e33f dump_context::begin_scope(char const*, dump_user_location_t const&,
dump_impl_location_t const&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/dumpfile.c:1132
0xf73256 auto_dump_scope::auto_dump_scope(char const*, dump_user_location_t
const&, dump_impl_location_t const&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/dumpfile.h:609
0xf73256 vect_slp_analyze_bb_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree-vect-slp.c:2820
0xf73256 vect_slp_bb(basic_block_def*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree-vect-slp.c:3036
0xf75ef0 execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree-vectorizer.c:1295
2.
% gcc-9.0.0-alpha20181202 -O2 -fsave-optimization-record -ftree-slp-vectorize
-fno-tree-bit-ccp -fno-tree-fre -c gcc/testsuite/gcc.target/arm/cmp-1.c
during GIMPLE pass: slp
gcc/testsuite/gcc.target/arm/cmp-1.c: In function 'ss_ge_mr4':
gcc/testsuite/gcc.target/arm/cmp-1.c:25:9: internal compiler error: tree check:
expected block, have <invalid tree code> in inlining_chain_to_json, at
optinfo-emit-json.cc:285
25 | TEST (ss_##NAME, short, OPERATOR) \
| ^~~
gcc/testsuite/gcc.target/arm/cmp-1.c:11:8: note: in definition of macro
'TEST_EXPR'
11 | void NAME##4 ARGS { if (EXPR) x++; } \
| ^~~~
gcc/testsuite/gcc.target/arm/cmp-1.c:25:3: note: in expansion of macro 'TEST'
25 | TEST (ss_##NAME, short, OPERATOR) \
| ^~~~
gcc/testsuite/gcc.target/arm/cmp-1.c:37:1: note: in expansion of macro
'TEST_OP'
37 | TEST_OP (ge, >=)
| ^~~~~~~
0x6dd3f7 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree.c:9757
0x65f661 tree_check(tree_node*, char const*, int, char const*, tree_code)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree.h:3154
0x65f661 optrecord_json_writer::inlining_chain_to_json(unsigned int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/optinfo-emit-json.cc:285
0xc14b1a optrecord_json_writer::optinfo_to_json(optinfo const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/optinfo-emit-json.cc:419
0xc14b48 optrecord_json_writer::add_record(optinfo const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/optinfo-emit-json.cc:141
0x94bc42 dump_context::emit_optinfo(optinfo const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/dumpfile.c:1207
0x94bc42 dump_context::end_any_optinfo()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/dumpfile.c:1193
0x94e33f dump_context::begin_scope(char const*, dump_user_location_t const&,
dump_impl_location_t const&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/dumpfile.c:1132
0xf73256 auto_dump_scope::auto_dump_scope(char const*, dump_user_location_t
const&, dump_impl_location_t const&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/dumpfile.h:609
0xf73256 vect_slp_analyze_bb_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree-vect-slp.c:2820
0xf73256 vect_slp_bb(basic_block_def*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree-vect-slp.c:3036
0xf75ef0 execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree-vectorizer.c:1295
(as of r266729)
>From gcc-bugs-return-624271-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 06:47:48 2018
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Subject: [Bug c++/85569] [8/9 Regression] is_invocable(F, decltype(objs)...) fails with "not supported by dump_expr#" unless via indirection
Date: Wed, 05 Dec 2018 06:47:00 -0000
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--- Comment #8 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Wed Dec 5 06:47:11 2018
New Revision: 266816
URL: https://gcc.gnu.org/viewcvs?rev=266816&root=gcc&view=rev
Log:
[PR85569] skip constexpr target_expr constructor dummy type conversion
The testcase is the work-around testcase for the PR; even that had
started failing. The problem was that, when unqualifying the type of
a TARGET_EXPR, we'd create a variant of the type, then request the
conversion of the TARGET_EXPR_INITIAL to that variant type. Though
the types are different pointer-wise, they're the same_type_p, so the
resulting modified expr compares cp_tree_equal to the original, which
maybe_constant_value flags as an error. There's no reason to
construct an alternate TARGET_EXPR or CONSTRUCTOR just because of an
equivalent type, except for another spot that expected pointer
equality that would no longer be satisfied. Without relaxing the
assert in constexpr_call_hasher::equal, g++.robertl/eb73.C would
trigger an assertion failure.
for gcc/cp/ChangeLog
PR c++/85569
* constexpr.c (adjust_temp_type): Test for type equality with
same_type_p.
(constexpr_call_hasher::equal): Likewise.
for gcc/testsuite/ChangeLog
PR c++/85569
* g++.dg/cpp1z/pr85569.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/pr85569.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-624272-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 07:33:07 2018
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Subject: [Bug libstdc++/86164] std::regex crashes when matching long lines
Date: Wed, 05 Dec 2018 07:33:00 -0000
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Nils Gladitz <nilsgladitz at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |nilsgladitz at gmail dot com
--- Comment #6 from Nils Gladitz <nilsgladitz at gmail dot com> ---
I think I am hitting this issue somewhat earlier on an ARM system with a more
limited stack size.
Was able to reproduce it on Desktop x86_64 Linux with e.g.:
#include <regex>
int main()
{
std::regex_match(
std::string(2000, 'a'),
std::regex(".*")
);
}
$ ulimit -s 256 # 256kb stack; which is what have by default on the ARM system
$ g++ test.cpp -o regex_test
$ ./regex_test
Segmentation fault (core dumped)
>From gcc-bugs-return-624273-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 08:12:02 2018
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Subject: [Bug middle-end/64242] Longjmp expansion incorrect
Date: Wed, 05 Dec 2018 08:12:00 -0000
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Paul Hua <paul.hua.gm at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #19 from Paul Hua <paul.hua.gm at gmail dot com> ---
It's fails on mips64el-unknown-linux-gnu
FAIL: gcc.c-torture/execute/pr64242.c -O2 execution test
FAIL: gcc.c-torture/execute/pr64242.c -O2 -flto -fno-use-linker-plugin
-flto-partition=none execution test
FAIL: gcc.c-torture/execute/pr64242.c -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects execution test
FAIL: gcc.c-torture/execute/pr64242.c -O3 -g execution test
FAIL: gcc.c-torture/execute/pr64242.c -Os execution test
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Subject: [Bug sanitizer/56682] -fsanitize documentation
Date: Wed, 05 Dec 2018 08:16:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Maybe for leak, not sure about that. For UBSan I think it isn't needed.
>From gcc-bugs-return-624275-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 08:26:44 2018
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Subject: [Bug sanitizer/88333] [9 Regression] ice in asan_emit_stack_protection, at asan.c:1574
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Dec 5 08:26:06 2018
New Revision: 266817
URL: https://gcc.gnu.org/viewcvs?rev=266817&root=gcc&view=rev
Log:
PR sanitizer/88333
* cfgexpand.c (expand_stack_vars): If asan_vec is empty, start with
aligning frame offset to ASAN_RED_ZONE_SIZE bytes.
* c-c++-common/asan/pr88333.c: New test.
Added:
trunk/gcc/testsuite/c-c++-common/asan/pr88333.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cfgexpand.c
trunk/gcc/testsuite/ChangeLog
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From: "emmanuel.le-trong@cnrs-orleans.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88092] class nontype template deduction failed when providing type to class
Date: Wed, 05 Dec 2018 08:29:00 -0000
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emmanuel.le-trong@cnrs-orleans.fr changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |emmanuel.le-trong@cnrs-orle
| |ans.fr
--- Comment #3 from emmanuel.le-trong@cnrs-orleans.fr ---
I have a problem with this. AFAIK, nowhere in the standard is written that a
class template without argument (i.e. not a type!) can be used as the type of a
non-type template argument. [temp.param] §4 says
> A non-type template-parameter shall have one of the following (optionally cv-qualified) types:
> — a type that is literal, has strong structural equality (10.10.1), has no mutable or volatile subobjects, and in which if there is a defaulted member operator<=>, then it is declared public,
> — an lvalue reference type,
> — a type that contains a placeholder type (9.1.7.5), or
> — a placeholder for a deduced class type (9.1.7.6).
So
template <class T> struct A {};
template <A a> struct B {};
should not be valid IMO.
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Subject: [Bug sanitizer/88333] [9 Regression] ice in asan_emit_stack_protection, at asan.c:1574
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/87897] [9 Regression] ICE in maybe_constant_value, at cp/constexpr.c:5255 since r265788
Date: Wed, 05 Dec 2018 08:43:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Dec 5 08:43:12 2018
New Revision: 266818
URL: https://gcc.gnu.org/viewcvs?rev=266818&root=gcc&view=rev
Log:
PR c++/87897
* g++.dg/init/const13.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/init/const13.C
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/87897] [9 Regression] ICE in maybe_constant_value, at cp/constexpr.c:5255 since r265788
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |DUPLICATE
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed by r266816 aka PR85569 fix.
*** This bug has been marked as a duplicate of bug 85569 ***
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Subject: [Bug c++/85569] [8/9 Regression] is_invocable(F, decltype(objs)...) fails with "not supported by dump_expr#" unless via indirection
Date: Wed, 05 Dec 2018 08:46:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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CC| |marxin at gcc dot gnu.org
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 87897 has been marked as a duplicate of this bug. ***
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Subject: [Bug c++/85569] [8 Regression] is_invocable(F, decltype(objs)...) fails with "not supported by dump_expr#" unless via indirection
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |jakub at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |aoliva at gcc dot gnu.org
Summary|[8/9 Regression] |[8 Regression]
|is_invocable(F, |is_invocable(F,
|decltype(objs)...) fails |decltype(objs)...) fails
|with "not supported by |with "not supported by
|dump_expr#" unless via |dump_expr#" unless via
|indirection |indirection
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk.
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From: "hanicka at hanicka dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/88092] class nontype template deduction failed when providing type to class
Date: Wed, 05 Dec 2018 09:09:00 -0000
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--- Comment #4 from Hana DusÃková <hanicka at hanicka dot net> ---
(In reply to Emmanuel Le Trong from comment #3)
> I have a problem with this. AFAIK, nowhere in the standard is written that a
> class template without argument (i.e. not a type!) can be used as the type
> of a non-type template argument. [temp.param] §4 says
>
> > A non-type template-parameter shall have one of the following (optionally cv-qualified) types:
> > — a type that is literal, has strong structural equality (10.10.1), has no mutable or volatile subobjects, and in which if there is a defaulted member operator<=>, then it is declared public,
> > — an lvalue reference type,
> > — a type that contains a placeholder type (9.1.7.5), or
> > — a placeholder for a deduced class type (9.1.7.6).
>
> So
>
> template <class T> struct A {};
> template <A a> struct B {};
>
> should not be valid IMO.
You are correct, you must have class template argument deduction rule. This
should be valid:
template <class T> struct A {
constexpr A(...) {}
};
template <class T> A(T) -> A<T>;
template <A a> struct B {};
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Subject: [Bug c++/88092] class nontype template deduction failed when providing type to class
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--- Comment #5 from Hana DusÃková <hanicka at hanicka dot net> ---
So minimal example is:
template<typename T>
struct S {
constexpr S(...) { }
};
template <typename T> S(T) -> S<T>;
template <S s> struct foo { };
template <S s>
void fn ()
{
auto t = s;
foo<t> f1;
foo<s> f2;
}
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Subject: [Bug target/88343] [7/8/9 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
Date: Wed, 05 Dec 2018 09:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88343
--- Comment #5 from Iain Sandoe <iains at gcc dot gnu.org> ---
I've been trying the following;
There were two bugs;
1) the test for Darwin's pic reg needs to be in the save_reg_p () func for
other callers.
2) the bit of code in the #ifdef was essentially doing nothing in most cases
since Darwin's RS6000_PIC_OFFSET_TABLE_REGNUM is usually (always?) 31.
------
(keeping V4 and Darwin separate in the testing was because there was another
option for V4 [ !constant_pool_empty_p () ] to be evaluated).
This completed without regression on Power7 (gcc110) and correctly elides the
pic reg save for the trivial testcase. Darwin bootstrapped, but testing will
take at least 8h so not able to say if that's OK yet.
-------
commit cef9f706e794d85afbebc748dbb89541519428c9
Author: Iain Sandoe <iain@sandoe.co.uk>
Date: Tue Dec 4 08:01:05 2018 +0000
trial fix for 88343
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index b5d8584..c296a4a 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -23949,8 +23949,12 @@ save_reg_p (int reg)
|| !constant_pool_empty_p ()))
return true;
- if ((DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_DARWIN)
- && flag_pic)
+ if (DEFAULT_ABI == ABI_V4
+ && flag_pic && crtl->uses_pic_offset_table)
+ return true;
+
+ else if (DEFAULT_ABI == ABI_DARWIN
+ && flag_pic && crtl->uses_pic_offset_table)
return true;
}
@@ -23970,13 +23974,6 @@ first_reg_to_save (void)
if (save_reg_p (first_reg))
break;
-#if TARGET_MACHO
- if (flag_pic
- && crtl->uses_pic_offset_table
- && first_reg > RS6000_PIC_OFFSET_TABLE_REGNUM)
- return RS6000_PIC_OFFSET_TABLE_REGNUM;
-#endif
-
return first_reg;
}
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Subject: [Bug fortran/88304] [9 Regression] ICE in use_pointer_in_frame, at tree-nested.c:267
Date: Wed, 05 Dec 2018 09:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88304
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase:
module pr88304
implicit none
type t
integer :: b = -1
end type t
contains
subroutine f1 (x)
integer (kind = 4), intent(out) :: x
x = 5
end subroutine f1
subroutine f2 ()
type(t) :: x
call f3
if (x%b .ne. 5) stop 1
contains
subroutine f3
call f1 (x%b)
end subroutine f3
end subroutine f2
end module pr88304
>From gcc-bugs-return-624286-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 09:34:45 2018
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Subject: [Bug fortran/88356] [9 Regression] ICE with -Werror in reduce_binary_ac, at fortran/arith.c:1318 (and others)
Date: Wed, 05 Dec 2018 09:34:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-624287-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 09:42:01 2018
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Subject: [Bug tree-optimization/88361] gcc does not unroll loop
Date: Wed, 05 Dec 2018 09:42:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Severity|normal |enhancement
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Well, 9*9 == 81 is simply above the hard limit we put on the number of unrolled
iterations (controlled by --param max-completely-peel-times where the default
is 16). For a loop nest the limit is applied to individual loops which
explains
why you may see a total of 81 scalar iterations unrolled.
One could say we have too many individual knobs (we do!) and that the number
of copies limit is pointless since we have a size limit as well. But that
doesn't work for the case where GCC thinks the loop shrinks by unrolling it.
But yes, improvements are possible here (esp. with inner body unroll times
in a nest vs. non-nest).
>From gcc-bugs-return-624288-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 09:46:06 2018
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Subject: [Bug c++/88362] attribute aligned silently ignored on C++ references
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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CC| |jsm28 at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
But isn't alignof (r) the alignment of the 'int' while alignof (p) is the
alignment of the pointer?!
That is, alignof(&r) should produce 64, no? Seems to produce 8 for me.
Still your test is bougs?
Btw, alignof(*p) produces 4 as well, consistent with that for r.
I think to align the pointer you need a typedef, attribute placement doesn't
allow distinguishing between pointed-to vs. pointer type the same way
as qualifiers do.
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Subject: [Bug c/88363] [9 Regression] alloc_align attribute doesn't accept enumerated arguments
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88304] [9 Regression] ICE in use_pointer_in_frame, at tree-nested.c:267
Date: Wed, 05 Dec 2018 09:49:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'll fix the tree-nested.c issue, but I'm wondering about the clobber. E.g.
for
module pr88304
implicit none
type t
integer :: b = -1
integer :: c = 2
end type t
contains
subroutine f1 (x)
integer, intent(out) :: x
x = 5
end subroutine f1
subroutine f4 (x)
integer, intent(in) :: x
end subroutine f4
subroutine f2 ()
type(t) :: x
call f3
if (x%b .ne. 5) stop 1
contains
subroutine f3
call f1 (x%b)
end subroutine f3
subroutine f5
call f4 (x%b)
end subroutine f5
end subroutine f2
end module pr88304
the clobber at the beginning of f3 doesn't make sense to me:
f3 ()
{
x = {CLOBBER};
_1 = &x.b;
f1 (_1);
}
Does the fact that you call f1 (x%b) and f1's argument is intent(in) clobber
the whole type, including x%c? I'd expect only x%b to be clobbered.
Or consider:
module pr88304
implicit none
type t
integer :: b = -1
integer :: c = 2
end type t
contains
subroutine f1 (x)
integer, intent(out) :: x
x = 5
end subroutine f1
subroutine f2 ()
type(t) :: x
call f1 (x%b)
if (x%b .ne. 5 .or. x%c .ne. 2) stop 1
end subroutine f2
end module pr88304
use pr88304
call f2
end
This fails at -O2, is it really undefined?
>From gcc-bugs-return-624291-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 09:57:13 2018
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Subject: [Bug fortran/88304] [9 Regression] ICE in use_pointer_in_frame, at tree-nested.c:267
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
And lastly, what tree-nested.c does in cases which don't really fail is pretty
weird:
module pr88304
implicit none
contains
subroutine f1 (x)
integer, intent(out) :: x
x = 5
end subroutine f1
subroutine f2 ()
integer :: x
call f3
if (x .ne. 5) stop 1
contains
subroutine f3
call f1 (x)
end subroutine f3
end subroutine f2
end module pr88304
The original
x = {CLOBBER};
is replaced here with:
integer(kind=4) D.3863;
D.3863 = {CLOBBER};
CHAIN.3->x = D.3863;
I guess we want to drop those from the IL instead as well.
>From gcc-bugs-return-624292-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 10:04:41 2018
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88304] [9 Regression] ICE in use_pointer_in_frame, at tree-nested.c:267
Date: Wed, 05 Dec 2018 10:04:00 -0000
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--- Comment #11 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 5 Dec 2018, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88304
>
> --- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> And lastly, what tree-nested.c does in cases which don't really fail is pretty
> weird:
> module pr88304
> implicit none
> contains
> subroutine f1 (x)
> integer, intent(out) :: x
> x = 5
> end subroutine f1
> subroutine f2 ()
> integer :: x
> call f3
> if (x .ne. 5) stop 1
> contains
> subroutine f3
> call f1 (x)
> end subroutine f3
> end subroutine f2
> end module pr88304
>
> The original
> x = {CLOBBER};
> is replaced here with:
> integer(kind=4) D.3863;
>
> D.3863 = {CLOBBER};
> CHAIN.3->x = D.3863;
> I guess we want to drop those from the IL instead as well.
Heh, yes. Or convert them to
D.3863 = CHAIN.3->x;
*D.3863 = {CLOBBER};
but not sure if those will ever end up being useful.
>From gcc-bugs-return-624293-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 10:06:18 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88304] [9 Regression] ICE in use_pointer_in_frame, at tree-nested.c:267
Date: Wed, 05 Dec 2018 10:06:00 -0000
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--- Comment #12 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 5 Dec 2018, rguenther at suse dot de wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88304
>
> --- Comment #11 from rguenther at suse dot de <rguenther at suse dot de> ---
> On Wed, 5 Dec 2018, jakub at gcc dot gnu.org wrote:
>
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88304
> >
> > --- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> > And lastly, what tree-nested.c does in cases which don't really fail is pretty
> > weird:
> > module pr88304
> > implicit none
> > contains
> > subroutine f1 (x)
> > integer, intent(out) :: x
> > x = 5
> > end subroutine f1
> > subroutine f2 ()
> > integer :: x
> > call f3
> > if (x .ne. 5) stop 1
> > contains
> > subroutine f3
> > call f1 (x)
> > end subroutine f3
> > end subroutine f2
> > end module pr88304
> >
> > The original
> > x = {CLOBBER};
> > is replaced here with:
> > integer(kind=4) D.3863;
> >
> > D.3863 = {CLOBBER};
> > CHAIN.3->x = D.3863;
> > I guess we want to drop those from the IL instead as well.
>
> Heh, yes. Or convert them to
>
> D.3863 = CHAIN.3->x;
> *D.3863 = {CLOBBER};
>
> but not sure if those will ever end up being useful.
Might be in case the function is inlined if we manage to turn
it back to
x = {CLOBBER};
?
>From gcc-bugs-return-624294-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 10:12:36 2018
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Subject: [Bug target/87288] [8 Regression] Segfault after const_cast with "-O2 -ftree-loop-vectorize" but _without_ "-mavx"
Date: Wed, 05 Dec 2018 10:12:00 -0000
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--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
I'm doing the backport now.
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Subject: [Bug tree-optimization/86637] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:293
Date: Wed, 05 Dec 2018 10:28:00 -0000
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--- Comment #6 from Arseny Solokha <asolokha at gmx dot com> ---
Created attachment 45157
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45157&action=edit
Testcase #5
% x86_64-pc-linux-gnu-gcc-9.0.0-alpha20181202 -mavx2 -O2
-fsave-optimization-record -ftree-parallelize-loops=2 -ftree-slp-vectorize -g
-w -c pa97jedl.c
during GIMPLE pass: parloops
pa97jedl.c: In function 'n':
pa97jedl.c:49:1: internal compiler error: tree check: expected block, have
<invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:285
49 | n(__int128 u128_8, uint8_t uc_9) {
| ^
0x6dd3f7 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree.c:9757
0x65f661 tree_check(tree_node*, char const*, int, char const*, tree_code)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree.h:3154
0x65f661 optrecord_json_writer::inlining_chain_to_json(unsigned int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/optinfo-emit-json.cc:285
0xc14b1a optrecord_json_writer::optinfo_to_json(optinfo const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/optinfo-emit-json.cc:419
0xc14b48 optrecord_json_writer::add_record(optinfo const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/optinfo-emit-json.cc:141
0x94bc42 dump_context::emit_optinfo(optinfo const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/dumpfile.c:1207
0x94bc42 dump_context::end_any_optinfo()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/dumpfile.c:1193
0x94e33f dump_context::begin_scope(char const*, dump_user_location_t const&,
dump_impl_location_t const&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/dumpfile.c:1132
0xf47943 auto_dump_scope::auto_dump_scope(char const*, dump_user_location_t
const&, dump_impl_location_t const&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/dumpfile.h:609
0xf47943 vect_analyze_loop_form_1(loop*, gcond**, tree_node**, tree_node**,
tree_node**, gcond**)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree-vect-loop.c:1156
0xf48134 vect_analyze_loop_form(loop*, vec_info_shared*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree-vect-loop.c:1312
0xdb983f gather_scalar_reductions
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree-parloops.c:2599
0xdb983f try_create_reduction_list
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree-parloops.c:2784
0xdb983f parallelize_loops
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree-parloops.c:3391
0xdbb4ad execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree-parloops.c:3505
0xdbb4ad execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181202/work/gcc-9-20181202/gcc/tree-parloops.c:3484
parloops again.
This one is weird. Why does it stop ICEing when I simply change indentation or
remove obviously superfluous semicolons or parens?
>From gcc-bugs-return-624296-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 10:35:13 2018
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Subject: [Bug fortran/88304] [9 Regression] ICE in use_pointer_in_frame, at tree-nested.c:267
Date: Wed, 05 Dec 2018 10:35:00 -0000
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45158
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45158&action=edit
gcc9-pr88304.patch
Untested fix for the tree-nested.c bug, handles it like we handle it in
convert_local_reference_stmt.
>From gcc-bugs-return-624297-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 10:40:33 2018
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Subject: [Bug fortran/88364] New: [9 Regression] Wrong-code due to CLOBBER
Date: Wed, 05 Dec 2018 10:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88364
Bug ID: 88364
Summary: [9 Regression] Wrong-code due to CLOBBER
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
CC: anlauf at gmx dot de, jakub at gcc dot gnu.org, rguenth at gcc dot gnu.org,
unassigned at gcc dot gnu.org
Depends on: 88304
Target Milestone: ---
Target: x86_64-pc-linux-gnu
+++ This bug was initially created as a clone of Bug #88304 +++
As mentioned in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88304#c9
I believe the CLOBBERs added in:
else if (add_clobber)
{
tree clobber;
tree var;
/* FIXME: This fails if var is passed by reference, see PR
41453. */
var = expr->symtree->n.sym->backend_decl;
clobber = build_clobber (TREE_TYPE (var));
gfc_add_modify (&se->pre, var, clobber);
}
are sometimes IMHO inappropriate, in particular if we are passing by reference
only a part of some variable (when the size of the expression that actually
should be clobbered is smaller than the whole backend_decl).
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88304
[Bug 88304] [9 Regression] ICE in use_pointer_in_frame, at tree-nested.c:267
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Subject: [Bug fortran/88364] [9 Regression] Wrong-code due to CLOBBER
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88364
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|ice-on-valid-code |wrong-code
CC| |tkoenig at gcc dot gnu.org
Target Milestone|--- |9.0
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Testcase (FAILs with -O2):
module pr88364
implicit none
type t
integer :: b = -1
integer :: c = 2
end type t
contains
subroutine f1 (x)
integer, intent(out) :: x
x = 5
end subroutine f1
subroutine f2 ()
type(t) :: x
call f1 (x%b)
if (x%b .ne. 5 .or. x%c .ne. 2) stop 1
end subroutine f2
end module pr88364
use pr88364
call f2
end
If t doesn't have c field, it would be ok to clobber whole x, even when we want
to clobber just x%b, because x%b occupies all bits of x.
Likely started with r264506 aka PR41453 fix.
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Subject: [Bug middle-end/41453] use INTENT(out) for optimization
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
See PR88364 for fallout.
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From: "igor.chorazewicz at intel dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88365] New: -Wsign-conversion ignores implicit conversion
Date: Wed, 05 Dec 2018 10:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88365
Bug ID: 88365
Summary: -Wsign-conversion ignores implicit conversion
Product: gcc
Version: 8.2.0
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Priority: P3
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Consider following code, compiled with -Wsign-conversion:
#include <iostream>
template <typename T>
struct wrapper {
T t;
operator T()
{
return t;
}
T get()
{
return t;
}
};
int main() {
int a[10];
int* x { a } ;
wrapper<long unsigned int> y{2};
std::cout << (x + y); // warning
}
It produces "warning: conversion to 'long int' from 'long unsigned int' may
change the sign of the result". If y is of type "long unsigned int", there is
no warning. Moreover when I explicitly call y.get() there is also no warning:
std::cout << (x + y.get()); // ok
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Subject: [Bug tree-optimization/87360] [8/9 Regression] ICE in remove_redundant_iv_tests at gcc/tree-ssa-loop-ivcanon.c:571 since r255467
Date: Wed, 05 Dec 2018 11:06:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Dec 5 11:05:59 2018
New Revision: 266820
URL: https://gcc.gnu.org/viewcvs?rev=266820&root=gcc&view=rev
Log:
PR tree-optimization/87360
* gimple-loop-jam.c (tree_loop_unroll_and_jam): On failure to analyze
data dependencies, don't return false, just continue. Formatting
fixes.
(merge_loop_tree, bb_prevents_fusion_p, unroll_jam_possible_p,
fuse_loops): Formatting fixes.
* g++.dg/opt/pr87360.C: New test.
* gfortran.dg/pr87360.f90: New test.
Added:
trunk/gcc/testsuite/g++.dg/opt/pr87360.C
trunk/gcc/testsuite/gfortran.dg/pr87360.f90
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimple-loop-jam.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug d/88366] New: ubsan build of d
Date: Wed, 05 Dec 2018 11:08:00 -0000
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Bug ID: 88366
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I just tried a ubsan build of the new D code in gcc trunk.
./../trunk/gcc/d/dmd/dsymbol.c:1194:56: runtime error: shift exponent 32 is too
large for 32-bit type 'int'
../../trunk/gcc/d/dmd/intrange.c:240:7: runtime error: shift exponent 64 is too
large for 64-bit type 'long unsigned int'
../../trunk/gcc/d/dmd/dsymbol.c:1199:64: runtime error: shift exponent 53 is
too large for 32-bit type 'int'
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Subject: [Bug tree-optimization/87360] [8 Regression] ICE in remove_redundant_iv_tests at gcc/tree-ssa-loop-ivcanon.c:571 since r255467
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|remove_redundant_iv_tests |remove_redundant_iv_tests
|at |at
|gcc/tree-ssa-loop-ivcanon.c |gcc/tree-ssa-loop-ivcanon.c
|:571 since r255467 |:571 since r255467
Known to fail|9.0 |
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug c++/88362] attribute aligned silently ignored on C++ references
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
More likely clang implemented a different extension than gcc had.
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Subject: [Bug fortran/88364] [9 Regression] Wrong-code due to CLOBBER
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug bootstrap/81033] [8 Regression] there are cases where ld64 is not able to determine correct atom boundaries from the output GCC currently produces
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #51 from Iain Sandoe <iains at gcc dot gnu.org> ---
closing as fixed - the problem exists on 6 and 5, but those branches are
closed, so interested folks will have to apply the patches locally.
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Subject: [Bug tree-optimization/86637] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:293
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think the issue is we use vect_location via DUMP_VECT_SCOPE before we
set it, thus using an old location in a function where we may have GCed
BLOCKs, etc. The loop vectorization pass resets it via
vect_location = dump_user_location_t ();
(?) but the SLP vectorization pass not.
diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c
index 0a4eca51ad7..1a6cb56a872 100644
--- a/gcc/tree-vectorizer.c
+++ b/gcc/tree-vectorizer.c
@@ -1303,6 +1303,8 @@ pass_slp_vectorize::execute (function *fun)
loop_optimizer_finalize ();
}
+ vect_location = dump_user_location_t ();
+
return 0;
}
This fixes one testcase. I'm going to apply that.
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Subject: [Bug c++/87814] [9 Regression] ICE in in tsubst_copy, at cp/pt.c:15962 with range-v3
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Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Created attachment 45159
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45159&action=edit
candidate patch
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Subject: [Bug tree-optimization/86637] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:293
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed?
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Subject: [Bug tree-optimization/86637] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:293
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--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Dec 5 11:36:03 2018
New Revision: 266821
URL: https://gcc.gnu.org/viewcvs?rev=266821&root=gcc&view=rev
Log:
2018-12-05 Richard Biener <rguenther@suse.de>
PR tree-optimization/86637
* tree-vectorizer.c (pass_slp_vectorize::execute): Reset
vect_location at the end.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-vectorizer.c
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Subject: [Bug c++/88146] ice in tsubst_copy, at cp/pt.c:16014
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--- Comment #6 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
The patch I've just attached to bug 87814 affects this as well, but although it
allows the testcase to avoid this specific crash, it still fails later, while
synthesizing a ctor for dn.
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Subject: [Bug c/88367] New: [9 Regression] -fno-delete-null-pointer-checks doesn't work properly
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Bug ID: 88367
Summary: [9 Regression] -fno-delete-null-pointer-checks doesn't
work properly
Product: gcc
Version: 9.0
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For some reason gcc9 began to delete NULL pointer checks even with
-fno-delete-null-pointer-checks option (which should prohibit doing so).
There is the following function:
static long kmapset_cmp(struct kmapset_map *map_a, struct kmapset_map *map_b)
{
struct kmapset_link *link_a, *link_b;
if (map_a->hash != map_b->hash)
return map_a->hash - map_b->hash;
if (map_a->size != map_b->size)
return map_a->size - map_b->size;
link_a = hlist_entry(map_a->links.first,
struct kmapset_link, map_link);
link_b = hlist_entry(map_b->links.first,
struct kmapset_link, map_link);
while (&link_a->map_link) {
if (link_a->key != link_b->key)
return (long)link_a->key - (long)link_b->key;
if (link_a->value != link_b->value)
return link_a->value - link_b->value;
link_a = list_entry(link_a->map_link.next,
struct kmapset_link, map_link);
link_b = list_entry(link_b->map_link.next,
struct kmapset_link, map_link);
}
return map_a->default_value - map_b->default_value;
}
Full source:
https://github.com/OpenVZ/vzkernel/blob/branch-rh7-3.10.0-123.1.2-ovz/lib/kmapset.c
The problem is that gcc9 removes while condition 'while (&link_a->map_link)'
even with -fno-delete-null-pointer-checks option. There is undefined behavior
with taking the address from lvalue which doesn't designate an object. In the
case when map_a->links.first is NULL, then link_a will be equal to (NULL - 24)
and expression &((struct kmapset_link *)(NULL - 24))->map_link will refer to
NULL. Ok, it's undefined behavior and the compiler can remove this check, but
shouldn't -fno-delete-null-pointer-checks prevent this? GCC8 with
-fno-delete-null-pointer-checks don't remove this check.
GCC9 was built on this commit:
commit 3d4762327aed5cf6cafbaa7a52166df4ef92eb82
Author: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue Dec 4 11:26:14 2018 +0000
2018-12-04 Richard Biener <rguenther@suse.de>
PR tree-optimization/88301
* tree-vrp.c (register_edge_assert_for_2): Fix sign-conversion
issues in last commit.
The assembly code generated by gcc9 - https://pastebin.com/dkuEuyLQ
ffffffff81b4bd9c: 48 8b 48 f0 mov rcx,QWORD PTR
[rax-0x10] //BUG: unable to handle kernel paging request at fffffffffffffff0
(this is link_a->key)
All gcc flags that are used - https://pastebin.com/6AbyEXgF
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Subject: [Bug middle-end/86827] [8/9 Regression] -Warray-bounds produces negative indicies
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Adjusted testcase that fails also with -m64:
struct A { unsigned char a[84]; };
struct B { unsigned char b[216]; };
struct C { union { struct A c; struct B d; }; };
struct D { unsigned char e[65536]; unsigned int f; __SIZE_TYPE__ g; };
void
foo (struct D *s)
{
struct C t;
unsigned char *e = s->e + 64;
unsigned int l = s->f;
__SIZE_TYPE__ o = s->g;
if (o > 512)
o -= 512;
o -= 204;
if (o > sizeof t.c.a || o + l > sizeof t.c.a)
l = 0;
else
__builtin_memcpy (e, t.c.a + o, l);
}
If this warning would be done during vrp2 when there are still asserts
available rather than in a separate pass right after it, or if it used evrp
analyzer, guess it could easily find out from the guarding condition that the
range is narrower.
But even if it doesn't, I think we shouldn't warn even for:
void
bar (struct D *s)
{
struct C t;
unsigned char *e = s->e + 64;
unsigned int l = s->f;
__SIZE_TYPE__ o = s->g;
if (o > 512)
o -= 512;
o -= 204;
__builtin_memcpy (e, t.c.a + o, l);
}
# RANGE ~[18446744073709550900, 18446744073709551411]
o_10 = o_3 + 18446744073709551412;
# RANGE [0, 4294967295] NONZERO 4294967295
_1 = (long unsigned int) l_7;
_2 = &t.D.1913.c.a + o_10;
__builtin_memcpy (e_5, _2, _1);
we should treat at least anti-ranges where both min and max are completely
outside of the bounds of the object as effectively VARYING, it doesn't tell us
any interesting information.
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Subject: [Bug c/88367] [9 Regression] -fno-delete-null-pointer-checks doesn't work properly
Date: Wed, 05 Dec 2018 12:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88367
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-12-05
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Please provide preprocessed source as requested.
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Subject: [Bug target/87288] [8 Regression] Segfault after const_cast with "-O2 -ftree-loop-vectorize" but _without_ "-mavx"
Date: Wed, 05 Dec 2018 12:20:00 -0000
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--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Dec 5 12:19:32 2018
New Revision: 266822
URL: https://gcc.gnu.org/viewcvs?rev=266822&root=gcc&view=rev
Log:
2018-12-05 Richard Biener <rguenther@suse.de>
Backport from mainline
2018-09-20 Richard Sandiford <richard.sandiford@arm.com>
PR tree-optimization/87288
* tree-vect-loop.c (vect_analyze_loop_2): Take PEELING_FOR_GAPS
into account when determining PEELING_FOR_NITERS.
* gcc.dg/vect/pr87288-1.c: New test.
* gcc.dg/vect/pr87288-2.c: Likewise,
* gcc.dg/vect/pr87288-3.c: Likewise.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/vect/pr87288-1.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/vect/pr87288-2.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/vect/pr87288-3.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-vect-loop.c
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/87288] [8 Regression] Segfault after const_cast with "-O2 -ftree-loop-vectorize" but _without_ "-mavx"
Date: Wed, 05 Dec 2018 12:20:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |8.2.1
Resolution|--- |FIXED
--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/88367] [9 Regression] -fno-delete-null-pointer-checks doesn't work properly
Date: Wed, 05 Dec 2018 12:29:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
This isn't about NULL pointers. &link_a->map_link is never NULL unless link_a
is a NULL pointer and map_link is the first member. Thus GCC preserves the
check
with
struct X { int i; };
int foo (struct X *p)
{
return &p->i == (void *)0;
}
I suspect your hlist_entry et al have a returns_nonnull attribute or so?
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/86827] [8/9 Regression] -Warray-bounds produces negative indicies
Date: Wed, 05 Dec 2018 12:33:00 -0000
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #7)
> Adjusted testcase that fails also with -m64:
> struct A { unsigned char a[84]; };
> struct B { unsigned char b[216]; };
> struct C { union { struct A c; struct B d; }; };
> struct D { unsigned char e[65536]; unsigned int f; __SIZE_TYPE__ g; };
>
> void
> foo (struct D *s)
> {
> struct C t;
> unsigned char *e = s->e + 64;
> unsigned int l = s->f;
> __SIZE_TYPE__ o = s->g;
> if (o > 512)
> o -= 512;
> o -= 204;
> if (o > sizeof t.c.a || o + l > sizeof t.c.a)
> l = 0;
> else
> __builtin_memcpy (e, t.c.a + o, l);
> }
>
> If this warning would be done during vrp2 when there are still asserts
> available rather than in a separate pass right after it, or if it used evrp
> analyzer, guess it could easily find out from the guarding condition that
> the range is narrower.
> But even if it doesn't, I think we shouldn't warn even for:
> void
> bar (struct D *s)
> {
> struct C t;
> unsigned char *e = s->e + 64;
> unsigned int l = s->f;
> __SIZE_TYPE__ o = s->g;
> if (o > 512)
> o -= 512;
> o -= 204;
> __builtin_memcpy (e, t.c.a + o, l);
> }
>
> # RANGE ~[18446744073709550900, 18446744073709551411]
> o_10 = o_3 + 18446744073709551412;
> # RANGE [0, 4294967295] NONZERO 4294967295
> _1 = (long unsigned int) l_7;
> _2 = &t.D.1913.c.a + o_10;
> __builtin_memcpy (e_5, _2, _1);
>
> we should treat at least anti-ranges where both min and max are completely
> outside of the bounds of the object as effectively VARYING, it doesn't tell
> us any interesting information.
It tells us that the index is always out-of-bounds in case one is above
and one is below the range of valid values. But yes, the quality
of the diagnostic is lacking.
Note we never reported ranges that overlap the valid indexes and the cited
anti-range above definitely does.
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Subject: [Bug c/88367] [9 Regression] -fno-delete-null-pointer-checks doesn't work properly
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--- Comment #3 from Pavel <pbutsykin at virtuozzo dot com> ---
Created attachment 45160
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45160&action=edit
preprocessed source
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Subject: [Bug c/88367] [9 Regression] -fno-delete-null-pointer-checks doesn't work properly
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--- Comment #4 from Pavel <pbutsykin at virtuozzo dot com> ---
Jonathan, sorry, attached.
Richard,
I forgot to show the structures:
struct kmapset_map {
struct kref kref;
unsigned size;
struct kmapset_set *set;
unsigned long default_value;
unsigned long hash;
struct hlist_head links;
union {
struct rb_node node;
struct rcu_head rcu_head;
};
};
struct kmapset_link {
struct kmapset_map *map;
struct kmapset_key *key;
unsigned long value;
struct hlist_node map_link;
union {
struct hlist_node key_link;
struct rcu_head rcu_head;
};
};
Actually link_a is'n NULL, because map_link isn't the first member and
hlist_entry is just container_of:
#define hlist_entry(ptr, type, member) container_of(ptr,type,member)
"In the case when map_a->links.first is NULL, then link_a will be equal to
(NULL - 24) and expression &((struct kmapset_link *)(NULL - 24))->map_link will
refer to NULL."
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/87571] [8/9 Regression] ICE in friend_accessible_p, accessing protected member of template friend inside template class
Date: Wed, 05 Dec 2018 12:50:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |nathan at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
ICE started with r255780.
>From gcc-bugs-return-624323-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 12:50:29 2018
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Subject: [Bug c/88367] [9 Regression] -fno-delete-null-pointer-checks doesn't work properly
Date: Wed, 05 Dec 2018 12:50:00 -0000
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--- Comment #5 from Pavel <pbutsykin at virtuozzo dot com> ---
Jonathan, sorry, attached.
Richard,
I forgot to show the structures:
struct kmapset_map {
struct kref kref;
unsigned size;
struct kmapset_set *set;
unsigned long default_value;
unsigned long hash;
struct hlist_head links;
union {
struct rb_node node;
struct rcu_head rcu_head;
};
};
struct kmapset_link {
struct kmapset_map *map;
struct kmapset_key *key;
unsigned long value;
struct hlist_node map_link;
union {
struct hlist_node key_link;
struct rcu_head rcu_head;
};
};
Actually link_a is'n NULL, because map_link isn't the first member and
hlist_entry is just container_of:
#define hlist_entry(ptr, type, member) container_of(ptr,type,member)
"In the case when map_a->links.first is NULL, then link_a will be equal to
(NULL - 24) and expression &((struct kmapset_link *)(NULL - 24))->map_link will
refer to NULL."
>From gcc-bugs-return-624324-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 12:58:48 2018
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/87048] [9 Regression] array_constructor_8.f90 failure on armeb
Date: Wed, 05 Dec 2018 12:58:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Has there been any analysis why it fails? Is it really a library issue, or
miscompiled library, something else? The testcase doesn't seem to use
asynchronous keyword anywhere, so it is unclear why that commit would make any
difference.
>From gcc-bugs-return-624325-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 13:25:47 2018
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Subject: [Bug target/88353] AVX512 instructions on macOS using Xcode Clang's assembler needs extra flags
Date: Wed, 05 Dec 2018 13:25:00 -0000
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MCCCS <mcccs at gmx dot com> changed:
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--- Comment #2 from MCCCS <mcccs at gmx dot com> ---
Duplicate of 86393
*** This bug has been marked as a duplicate of bug 86393 ***
>From gcc-bugs-return-624326-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 13:25:47 2018
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Subject: [Bug target/86393] GCC-8 appears to not detect AVX512 on iMac Pro 2018
Date: Wed, 05 Dec 2018 13:25:00 -0000
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MCCCS <mcccs at gmx dot com> changed:
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--- Comment #5 from MCCCS <mcccs at gmx dot com> ---
*** Bug 88353 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-624327-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 13:32:02 2018
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From: "ro at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/64242] Longjmp expansion incorrect
Date: Wed, 05 Dec 2018 13:32:00 -0000
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Rainer Orth <ro at gcc dot gnu.org> changed:
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| |ro at gcc dot gnu.org
--- Comment #20 from Rainer Orth <ro at gcc dot gnu.org> ---
The new testcase also FAILs on sparc-sun-solaris2.11 (both 32 and 64-bit):
+FAIL: gcc.c-torture/execute/pr64242.c -O2 execution test
+FAIL: gcc.c-torture/execute/pr64242.c -O2 -flto execution test
+FAIL: gcc.c-torture/execute/pr64242.c -O2 -flto -flto-partition=none
execution test
+FAIL: gcc.c-torture/execute/pr64242.c -O3 -g execution test
+FAIL: gcc.c-torture/execute/pr64242.c -Os execution test
Thread 2 received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1 (LWP 1)]
0x00000008 in ?? ()
(gdb) where
#0 0x00000008 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
Single-stepping, I find that this happens at the very end of main:
1: x/i $pc
=> 0x10de4 <main+268>: return %i7 + 8
(gdb)
0x00010de8 in main ()
at
/vol/gcc/src/hg/trunk/local/gcc/testsuite/gcc.c-torture/execute/pr64242.c:50
50 return 0;
1: x/i $pc
=> 0x10de8 <main+272>: nop
(gdb)
0x00000008 in ?? ()
1: x/i $pc
=> 0x8: <error: Cannot access memory at address 0x8>
Obviously the stack is corrupted beyond repair. I tried to avoid this by
replacing the return 0 with exit (0) to no avail.
The original testcase (before Jakub's patch) would abort instead:
Thread 2 received signal SIGABRT, Aborted.
[Switching to Thread 1 (LWP 1)]
0xfec7e044 in __lwp_sigqueue () from /lib/libc.so.1
(gdb) where
#0 0xfec7e044 in __lwp_sigqueue () from /lib/libc.so.1
#1 0xfebb9898 in raise () from /lib/libc.so.1
#2 0xfeb8b1d0 in abort () from /lib/libc.so.1
#3 0x00010ce8 in main () at /homes/ro/pr64242.c:27
>From gcc-bugs-return-624328-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 13:32:16 2018
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/85870] [7/8/9 Regression][LTO1] ICE in linemap_line_start, at libcpp/line-map.c:794
Date: Wed, 05 Dec 2018 13:32:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase that still ICEs in patch form:
--- gcc/testsuite/gcc.dg/lto/pr85870_0.c.jj 2018-12-05 14:30:47.506208171
+0100
+++ gcc/testsuite/gcc.dg/lto/pr85870_0.c 2018-12-05 14:29:15.468725392
+0100
@@ -0,0 +1,34 @@
+/* PR c/85870 */
+/* { dg-lto-do link } */
+/* { dg-lto-options { { -flto -O2 } } } */
+
+typedef struct abc_s {
+ char a1;
+ short a2;
+ unsigned int a3;
+ unsigned int a4;
+} abc;
+
+typedef struct xyz_s {
+ unsigned x1;
+ unsigned x2;
+ abc *x3;
+} xyz;
+
+extern xyz XYZ[3];
+static const abc Arr1[]={
+ {0,0,0xdeadbeaf,0xbeefdead} ,
+#line 1040
+ {0,0,0xdeadbeaf,0xbeefdead} };
+
+void init_xyz_0() {
+ XYZ[0].x1=975753;
+ XYZ[0].x2=1024;
+ XYZ[0].x3=(abc *)Arr1;
+
+}
+
+int
+main ()
+{
+}
--- gcc/testsuite/gcc.dg/lto/pr85870_1.c.jj 2018-12-05 14:30:53.269113163
+0100
+++ gcc/testsuite/gcc.dg/lto/pr85870_1.c 2018-12-05 14:29:22.613607607
+0100
@@ -0,0 +1,27 @@
+typedef struct abc_s {
+ char a1;
+ short a2;
+ unsigned int a3;
+ unsigned int a4;
+} abc;
+
+
+typedef struct xyz_s {
+ unsigned int x1;
+ unsigned int x2;
+ abc *x3;
+} xyz;
+
+
+extern xyz XYZ[3];
+static const abc Arr2[]={
+ {0,0,0xbeafdead,0xdeadbeef} ,
+#line 1048594
+ {0,0,0xbeafdead,0xdeadbeef} };
+
+void init_xyz_1() {
+ XYZ[1].x1=425753;
+ XYZ[1].x2=1048576;
+ XYZ[1].x3=(abc *)Arr2;
+
+}
>From gcc-bugs-return-624329-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 13:40:43 2018
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Subject: [Bug c/85870] [7/8/9 Regression][LTO1] ICE in linemap_line_start, at libcpp/line-map.c:794
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85870
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Bet the line number is high enough that we jump over some threshold and stop
counting ranges or columns or whatever at that point. David, can you please
have a look?
>From gcc-bugs-return-624330-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 13:44:32 2018
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Subject: [Bug c++/88368] New: Improper ``use of deleted function''
Date: Wed, 05 Dec 2018 13:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88368
Bug ID: 88368
Summary: Improper ``use of deleted function''
Product: gcc
Version: 8.2.1
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Priority: P3
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The following code fails to compile: https://godbolt.org/z/briQXa
Adding a `noexcept` specifier to the default constructor fixes the issue, but
it shouldn't be needed..
Clang compiles this code correctly, so does gcc 4.9. But gcc 7.3 doesn't, for
another reason.
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Subject: [Bug c++/88368] Improper ``use of deleted function''
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88368
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
#include <type_traits>
#include <utility>
template<class T>
union trivial_helper {
T t;
};
template <typename T>
struct trait {
static constexpr bool value =
std::is_copy_constructible<trivial_helper<T>>::value;
};
struct BlockFrequencyInfoImplBase {
struct BlockNode {
int Index = 1;
BlockNode() = default;
};
static constexpr bool v = trait<std::pair<BlockNode, int>>::value; // <<
remove this line to remove the error
void print() const {
BlockNode BB;
}
};
Testcase included inline. Used to be rejected e.g. in r210000, from r216750
and before r250994 used to be rejected with a different error.
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Subject: [Bug testsuite/88369] [9 regression] g++.dg/vect/pr33426-ivdep.cc etc. FAIL
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Subject: [Bug testsuite/88369] New: [9 regression] g++.dg/vect/pr33426-ivdep.cc etc. FAIL
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88369
Bug ID: 88369
Summary: [9 regression] g++.dg/vect/pr33426-ivdep.cc etc. FAIL
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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CC: dmalcolm at gcc dot gnu.org, schwab at gcc dot gnu.org
Target Milestone: ---
Target: sparc*-sun-solaris2.*, ia64-suse-linux-gnu
Between 20180928 (r264685) and 20180929 (r264715), two tests started to regress
on SPARC and IA-64:
+FAIL: g++.dg/vect/pr33426-ivdep-2.cc -std=c++11 (test for excess errors)
+FAIL: g++.dg/vect/pr33426-ivdep-2.cc -std=c++14 (test for excess errors)
+FAIL: g++.dg/vect/pr33426-ivdep-2.cc -std=c++98 (test for excess errors)
Excess errors:
/vol/gcc/src/hg/trunk/local/gcc/testsuite/g++.dg/vect/pr33426-ivdep-2.cc:12:3:
optimized: loop versioned for vectorization to enhance alignment
/vol/gcc/src/hg/trunk/local/gcc/testsuite/g++.dg/vect/pr33426-ivdep-2.cc:23:3:
optimized: loop versioned for vectorization to enhance alignment
+FAIL: g++.dg/vect/pr33426-ivdep.cc -std=c++11 (test for excess errors)
+FAIL: g++.dg/vect/pr33426-ivdep.cc -std=c++14 (test for excess errors)
+FAIL: g++.dg/vect/pr33426-ivdep.cc -std=c++98 (test for excess errors)
Excess errors:
/vol/gcc/src/hg/trunk/local/gcc/testsuite/g++.dg/vect/pr33426-ivdep.cc:11:13:
optimized: loop versioned for vectorization to enhance alignment
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Subject: [Bug c++/88368] Improper ``use of deleted function''
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88368
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
r209907 is the first one that rejects it this way, before that the preprocessed
source I'm trying doesn't compile because of some __is_trivially_assignable
changes, so it is possible 4.9 accepted this with 4.9 headers.
>From gcc-bugs-return-624335-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 14:08:22 2018
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From: "tschwinge at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgomp/88370] New: acc_get_cuda_stream/acc_set_cuda_stream: acc_async_sync, acc_async_noval
Date: Wed, 05 Dec 2018 14:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88370
Bug ID: 88370
Summary: acc_get_cuda_stream/acc_set_cuda_stream:
acc_async_sync, acc_async_noval
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: openacc, patch
Severity: normal
Priority: P3
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CC: cltang at gcc dot gnu.org, jakub at gcc dot gnu.org
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Per my reading of the OpenACC specification (and I submitted to them a patch to
clarify that, <https://github.com/OpenACC/openacc-spec/pull/165>), it's valid
to call "acc_get_cuda_stream"/"acc_set_cuda_stream" also with "acc_async_sync",
"acc_async_noval" arguments, not just with the nonnegative values as currently
implemented.
This is also supported by secondary documentation, such as code examples, or
presentations, which especially makes use of
"acc_get_cuda_stream(acc_async_sync)". For example:
<https://github.com/fomics/EuroHack15/wiki/CUDA-Streams-and-OpenACC-async-interoperability>,
or the PGI "OpenACC Getting Started Guide" (Version 2017) stating that "the
input argument is an async number or a pre-defined value such as
acc_async_sync".
This will need to be fixed on all release branches.
>From gcc-bugs-return-624336-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 14:09:28 2018
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Subject: [Bug c++/88371] New: Gratuitous (?) warning regarding an implicit conversion in pointer arithmetic
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Bug ID: 88371
Summary: Gratuitous (?) warning regarding an implicit
conversion in pointer arithmetic
Product: gcc
Version: 8.2.0
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See: https://godbolt.org/z/tYn9SX
for a live example and comparison with clang
Se: https://stackoverflow.com/q/53628998/1593077
for the question motivating this bug report.
-------
Consider the following program:
#include <iostream>
template <typename T>
struct wrapper {
T t;
operator T() const { return t; }
T get() const { return t; }
};
int main() {
int a[10];
int* x { a } ;
wrapper<long int> y1{2};
wrapper<unsigned int> y2{2};
wrapper<long unsigned int> y3{2};
std::cout << (x + y1) << '\n';
std::cout << (x + y2) << '\n';
std::cout << (x + y3) << '\n'; // this triggers a warning
std::cout << (x + y3.get()) << '\n';
}
When compiling it (with g++ 8.2.0) with -std=c++2a -Wsign-conversion we get:
a.cpp: In function ‘int main()’:
a.cpp:20:23: warning: conversion to ‘long int’ from ‘long unsigned int’ may
change the sign of the result [-Wsign-conversion]
std::cout << (x + y3) << '\n'; // this triggers a warning
^~
As far as I can tell, both the third and fourth line should trigger a warning,
or none of them should.
Also, a comment on the Stackoverflow page suggested this clause:
http://eel.is/c++draft/over.match.oper#9
may be relevant here.
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Subject: [Bug testsuite/88208] new test case c-c++-common/builtin-has-attribute-3.c in r266335 has multiple excess errors
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--- Comment #5 from Rainer Orth <ro at gcc dot gnu.org> ---
Author: ro
Date: Wed Dec 5 14:16:08 2018
New Revision: 266825
URL: https://gcc.gnu.org/viewcvs?rev=266825&root=gcc&view=rev
Log:
Provide SPARCv9 MAXALIGN in gcc.target/sparc/attr-aligned.c (PR
testsuite/88208)
PR testsuite/88208
* gcc.target/sparc/attr-aligned.c (MAXALIGN) [__sparcv9 ||
__arch64__]: Define.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/sparc/attr-aligned.c
>From gcc-bugs-return-624338-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 14:18:01 2018
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88364] [9 Regression] Wrong-code due to CLOBBER
Date: Wed, 05 Dec 2018 14:18:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-12-05
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.
>From gcc-bugs-return-624339-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 14:32:43 2018
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88368] Improper ``use of deleted function''
Date: Wed, 05 Dec 2018 14:32:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes, 4.9 accepts it, but so does 5.5 which contains r209907
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From: "arichardson at FreeBSD dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/88372] New: alloc_size attribute is ignored on function pointers
Date: Wed, 05 Dec 2018 14:37:00 -0000
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Bug ID: 88372
Summary: alloc_size attribute is ignored on function pointers
Product: gcc
Version: unknown
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In the following example code __builtin_object_size does not return 100 when
used on result of a call to a function pointer. See
https://godbolt.org/z/MI5k_m :
```
void *malloc_function(int) __attribute__((alloc_size(1)));
void* (*malloc_function_pointer)(int) __attribute__((alloc_size(1))) =
malloc_function;
unsigned long int foo(void) {
void *ptr = malloc_function_pointer(100);
return __builtin_object_size(ptr, 0);
}
unsigned long int bar(void) {
void *ptr = malloc_function(100);
return __builtin_object_size(ptr, 0);
}
```
I have been working on supporting alloc_size on function pointers in clang
(https://reviews.llvm.org/D55212) and was wondering if GCC might also support
this in the future.
Is i acceptable if clang also accepts [[gnu::alloc_size(N)]] on function
pointers or would this be incompatible with potential future GCC changes?
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From: "emmanuel.le-trong@cnrs-orleans.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88373] New: parse error in template argument list when using bitwise not with -std=c++2a switch
Date: Wed, 05 Dec 2018 14:41:00 -0000
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Bug ID: 88373
Summary: parse error in template argument list when using
bitwise not with -std=c++2a switch
Product: gcc
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Using the bitwise not in a non-type template argument produces a parse error
with the -std=c++2a switch on. It works fine without the switch. It also works
with the switch on in version 8.2.1.
$ cat bug_3.cpp
template <class T>
constexpr T value = T {};
template <class T, T t>
struct S {};
using U = S <int, ~value <int>>;
$ g++-9 -c bug_3.cpp && echo OK
OK
$ g++-9 -c -std=c++2a bug_3.cpp
bug_3.cpp:7:15: error: parse error in template argument list
7 | using U = S <int, ~value <int>>;
| ^~~~~~~~~~~~~~~~~~~~~
g++-9 -v
Using built-in specs.
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Configured with: ../gcc-9/configure --prefix=/home/manu/system/opt/gcc-9
--program-suffix=-9
Thread model: posix
gcc version 9.0.0 20181204 (experimental) (GCC)
>From gcc-bugs-return-624342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 14:47:24 2018
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88373] parse error in template argument list when using bitwise not with -std=c++2a switch
Date: Wed, 05 Dec 2018 14:47:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-12-05
CC| |mpolacek at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Yikes, started with r265734.
>From gcc-bugs-return-624343-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 14:51:55 2018
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From: "bob.steagall.cpp at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88374] New: crash when stepping into for loop where iterators are created and compared with gdb
Date: Wed, 05 Dec 2018 14:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88374
Bug ID: 88374
Summary: crash when stepping into for loop where iterators are
created and compared with gdb
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: bob.steagall.cpp at gmail dot com
Target Milestone: ---
Created attachment 45161
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45161&action=edit
preprocessed source file to demonstrate problem
Consider the following code:
========================
#include <atomic>
#include <vector>
struct TS
{
std::atomic<void*> mPtr;
};
int main()
{
std::vector<TS> test(10);
volatile int i = 0;
for (auto iter = test.begin(); iter != test.end(); ++iter)
{
++i;
}
return 0;
}
========================
GDB 7.11 and 8.2 both crash when repeatedly stepping into the for loop on line
14 when compiled with gcc 8.2 and -std=c++17.
The problem appears to be related to the combination of std::atomic<T> as an
element type AND the compilation flag -std=c++17.
If I change the flag to -std=c++14, gdb does not crash, and I can step thru the
iterator instantiations and comparisons as expected. Also, if I change the
pointer type to void*, the crash does not occur, and stepping works correctly.
I'm not sure if this is a GDB problem or a g++ codegen problem (or both?), so
I'm filing this report with both products.
Thanks,
--Bob
========================
To reproduce:
$ g++ -std=c++17 -Wall -Wextra -g -O0 test_dbg.cpp -o test_dbg
$ gdb test_dbg
inside of gdb:
(gdb) b 12
(gdb) r
(gdb) s
(gdb) s
(gdb) s
(gdb) s
(gdb) s
(gdb) s
{ gdb crashes with segv }
The following is a transcript from such a session:
Reading symbols from test_dbg...done.
(gdb) b 12
Breakpoint 1 at 0x400738: file test_dbg.cpp, line 12.
(gdb) r
Starting program: /space/tmp/test_dbg
Breakpoint 1, main () at test_dbg.cpp:12
(gdb) s
(gdb) s
std::vector<TS, std::allocator<TS> >::begin (this=0x7fffffffd7a0)
at /usr/local/gcc/8.2.0/include/c++/8.2.0/bits/stl_vector.h:699
(gdb) s
__gnu_cxx::__normal_iterator<TS*, std::vector<TS, std::allocator<TS> >
>::__normal_iterator (
this=0x7fffffffd778, __i=@0x7fffffffd7a0: 0x614c20)
at /usr/local/gcc/8.2.0/include/c++/8.2.0/bits/stl_iterator.h:781
(gdb) s
std::vector<TS, std::allocator<TS> >::end (this=0x7fffffffd7a0)
at /usr/local/gcc/8.2.0/include/c++/8.2.0/bits/stl_vector.h:717
(gdb) s
__gnu_cxx::__normal_iterator<TS*, std::vector<TS, std::allocator<TS> >
>::__normal_iterator (
this=0x7fffffffd778, __i=@0x7fffffffd7a8: 0x614c70)
at /usr/local/gcc/8.2.0/include/c++/8.2.0/bits/stl_iterator.h:781
(gdb) s
Segmentation fault (core dumped)
=============================
Here are the tool specs:
$ gdb -v
GNU gdb (GDB) 8.2
Copyright (C) 2018 Free Software Foundation, Inc. ...
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.5 LTS
Release: 16.04
Codename: xenia
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/local/gcc/8.2.0/libexec/gcc/x86_64-kewb-linux-gnu/8.2.0/lto-wrapper
Target: x86_64-kewb-linux-gnu
Configured with: /space/zbuild/gcc-builder/gcc-8.2.0/configure -v
--with-pkgversion='KEWB Computing Build' --prefix=/usr/local/gcc/8.2.0
--program-suffix= --enable-tls --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu --enable-languages=c,c++
--enable-lto --enable-bootstrap --disable-nls --disable-multilib
--disable-install-libiberty --disable-werror --with-system-zlib
Thread model: posix
gcc version 8.2.0 (KEWB Computing Build)
$ g++ -v -save-temps -std=c++17 -Wall -Wextra -g -O0 test_dbg.cpp -o test_dbg
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/local/gcc/8.2.0/libexec/gcc/x86_64-kewb-linux-gnu/8.2.0/lto-wrapper
Target: x86_64-kewb-linux-gnu
Configured with: /space/zbuild/gcc-builder/gcc-8.2.0/configure -v
--with-pkgversion='KEWB Computing Build' --prefix=/usr/local/gcc/8.2.0
--program-suffix= --enable-tls --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu --enable-languages=c,c++
--enable-lto --enable-bootstrap --disable-nls --disable-multilib
--disable-install-libiberty --disable-werror --with-system-zlib
Thread model: posix
gcc version 8.2.0 (KEWB Computing Build)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++17' '-Wall' '-Wextra' '-g'
'-O0' '-o' 'test_dbg' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/local/gcc/8.2.0/libexec/gcc/x86_64-kewb-linux-gnu/8.2.0/cc1plus -E -quiet
-v -imultiarch x86_64-linux-gnu -D_GNU_SOURCE test_dbg.cpp -mtune=generic
-march=x86-64 -std=c++17 -Wall -Wextra -g -fworking-directory -O0
-fpch-preprocess -o test_dbg.ii
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/../../../../x86_64-kewb-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/../../../../include/c++/8.2.0
/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/../../../../include/c++/8.2.0/x86_64-kewb-linux-gnu
/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/../../../../include/c++/8.2.0/backward
/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/include
/usr/local/include
/usr/local/gcc/8.2.0/include
/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++17' '-Wall' '-Wextra' '-g'
'-O0' '-o' 'test_dbg' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/local/gcc/8.2.0/libexec/gcc/x86_64-kewb-linux-gnu/8.2.0/cc1plus
-fpreprocessed test_dbg.ii -quiet -dumpbase test_dbg.cpp -mtune=generic
-march=x86-64 -auxbase test_dbg -g -O0 -Wall -Wextra -std=c++17 -version -o
test_dbg.s
GNU C++17 (KEWB Computing Build) version 8.2.0 (x86_64-kewb-linux-gnu)
compiled by GNU C version 8.2.0, GMP version 5.1.3, MPFR version 3.1.4,
MPC version 1.0.3, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++17 (KEWB Computing Build) version 8.2.0 (x86_64-kewb-linux-gnu)
compiled by GNU C version 8.2.0, GMP version 5.1.3, MPFR version 3.1.4,
MPC version 1.0.3, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: c0184c602d8f8aa7dc79a356eb27fd8e
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++17' '-Wall' '-Wextra' '-g'
'-O0' '-o' 'test_dbg' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/local/gcc/8.2.0/libexec/gcc/x86_64-kewb-linux-gnu/8.2.0/as -v --64 -o
test_dbg.o test_dbg.s
GNU assembler version 2.30 (x86_64-kewb-linux-gnu) using BFD version (GNU
Binutils) 2.30
COMPILER_PATH=/usr/local/gcc/8.2.0/libexec/gcc/x86_64-kewb-linux-gnu/8.2.0/:/usr/local/gcc/8.2.0/libexec/gcc/x86_64-kewb-linux-gnu/8.2.0/:/usr/local/gcc/8.2.0/libexec/gcc/x86_64-kewb-linux-gnu/:/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/:/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/
LIBRARY_PATH=/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/:/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/../../../../lib64/:/lib/x86_64-linux-gnu/:/lib/../lib64/:/usr/lib/x86_64-linux-gnu/:/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++17' '-Wall' '-Wextra' '-g'
'-O0' '-o' 'test_dbg' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/local/gcc/8.2.0/libexec/gcc/x86_64-kewb-linux-gnu/8.2.0/collect2 -plugin
/usr/local/gcc/8.2.0/libexec/gcc/x86_64-kewb-linux-gnu/8.2.0/liblto_plugin.so
-plugin-opt=/usr/local/gcc/8.2.0/libexec/gcc/x86_64-kewb-linux-gnu/8.2.0/lto-wrapper
-plugin-opt=-fresolution=test_dbg.res -plugin-opt=-pass-through=-lgcc_s
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lc
-plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc
--eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o
test_dbg /usr/lib/x86_64-linux-gnu/crt1.o /usr/lib/x86_64-linux-gnu/crti.o
/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/crtbegin.o
-L/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0
-L/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/../../../../lib64
-L/lib/x86_64-linux-gnu -L/lib/../lib64 -L/usr/lib/x86_64-linux-gnu
-L/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/../../.. test_dbg.o
-lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/usr/local/gcc/8.2.0/lib/gcc/x86_64-kewb-linux-gnu/8.2.0/crtend.o
/usr/lib/x86_64-linux-gnu/crtn.o
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++17' '-Wall' '-Wextra' '-g'
'-O0' '-o' 'test_dbg' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
(builds cleanly)
>From gcc-bugs-return-624344-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 14:52:14 2018
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88373] [9 Regression] parse error in template argument list when using bitwise not with -std=c++2a switch
Date: Wed, 05 Dec 2018 14:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88373
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
Summary|parse error in template |[9 Regression] parse error
|argument list when using |in template argument list
|bitwise not with -std=c++2a |when using bitwise not with
|switch |-std=c++2a switch
>From gcc-bugs-return-624345-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 14:53:39 2018
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88368] [7/8/9 Regression] Improper ``use of deleted function''
Date: Wed, 05 Dec 2018 14:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88368
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
Target Milestone|--- |7.4
Summary|Improper ``use of deleted |[7/8/9 Regression] Improper
|function'' |``use of deleted function''
>From gcc-bugs-return-624346-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 14:54:07 2018
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/63184] [7/8/9 Regression] Fails to simplify comparison
Date: Wed, 05 Dec 2018 14:54:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |6.1.0
Resolution|--- |FIXED
Target Milestone|9.0 |6.0
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
It happens that we optimize both cases now (with optimization only). Would be
still a regression vs. GCC 4.7 at -O0 but IMHO we shouldn't care about
optimizing this at -O0.
Thus fixed.
I'll add the testcases.
>From gcc-bugs-return-624347-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 14:54:48 2018
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88375] New: Vague source location for bad initialization
Date: Wed, 05 Dec 2018 14:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88375
Bug ID: 88375
Summary: Vague source location for bad initialization
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Given this C++11 code:
enum struct a : int {
one, two
};
struct foo {
int e1, e2;
a e3;
} arr[] = {
{ 1, 2, a::one },
{ 3, a::two },
{ 4, 5, a::two }
};
g++ trunk emits the unhelpfully vague:
/tmp/test.cc:12:1: error: cannot convert ‘a’ to ‘int’ in initialization
12 | };
| ^
(via an "error", with input_location at the final close-paren)
whereas clang identifies where the problem is:
/tmp/test.cc:10:8: error: cannot initialize a member subobject of type 'int'
with an rvalue of type 'a'
{ 3, a::two },
^~~~~~
1 error generated.
Similar to e.g. PR 45963, but might well be a different underlying issue.
>From gcc-bugs-return-624348-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 14:56:37 2018
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/63184] [7/8/9 Regression] Fails to simplify comparison
Date: Wed, 05 Dec 2018 14:56:00 -0000
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--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Dec 5 14:55:59 2018
New Revision: 266827
URL: https://gcc.gnu.org/viewcvs?rev=266827&root=gcc&view=rev
Log:
2018-12-05 Richard Biener <rguenther@suse.de>
PR middle-end/63184
* c-c++-common/pr19807-2.c: New testcase.
* c-c++-common/pr19807-3.c: Likewise.
Added:
trunk/gcc/testsuite/c-c++-common/pr19807-2.c
trunk/gcc/testsuite/c-c++-common/pr19807-3.c
Modified:
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-624349-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 15:44:22 2018
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Subject: [Bug target/86393] GCC-8 appears to not detect AVX512 on iMac Pro 2018
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-12-05
CC| |egallager at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to MCCCS from comment #5)
> *** Bug 88353 has been marked as a duplicate of this bug. ***
Taking the dup as confirmation.
>From gcc-bugs-return-624350-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 15:50:51 2018
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Subject: [Bug tree-optimization/86637] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:293
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86637
--- Comment #10 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to Richard Biener from comment #8)
> Fixed?
Yes, it fixes all three today's testcases, thanks.
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Subject: [Bug tree-optimization/88064] [9 Regression] Incorrect vectorizer over_widening pattern handling
Date: Wed, 05 Dec 2018 15:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88064
--- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Author: rsandifo
Date: Wed Dec 5 15:53:03 2018
New Revision: 266829
URL: https://gcc.gnu.org/viewcvs?rev=266829&root=gcc&view=rev
Log:
Use unsigned arithmetic for demoted vector plus/minus/mult (PR 88064)
As Jakub pointed out, if we narrow a plus, minus or mult operation based
on the number of bits that consumers need, we have to convert a signed
operation to an unsigned one in order to avoid new undefined behaviour.
This patch does that and generalises vect_convert_input and
vect_recog_over_widening_pattern to cope with the extra casts.
(The changes to both functions are covered by existing tests.)
2018-12-03 Richard Sandiford <richard.sandiford@arm.com>
gcc/
PR tree-optimization/88064
* tree-vect-patterns.c (vect_convert_input): Convert the result of
an existing cast if it has the right width but the wrong sign.
Do not test the signedness of the required result when
considering whether to split an existing cast; instead split to
a type with the same signedness as the source of the cast, then
convert it to the opposite signedness where necessary.
(vect_recog_over_widening_pattern): Handle sign changes between
the final PLUS_EXPR and the RSHIFT_EXPR.
(vect_recog_average_pattern): Use an unsigned operation when
truncating an addition, subtraction or multiplication. Cast the
result back to the "real" signedness before promoting.
gcc/testsuite/
PR tree-optimization/88064
* gcc.dg/vect/vect-over-widen-23.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/vect/vect-over-widen-23.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-patterns.c
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Subject: [Bug c++/88146] ice in tsubst_copy, at cp/pt.c:16014
Date: Wed, 05 Dec 2018 15:58:00 -0000
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Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #7 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Created attachment 45162
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45162&action=edit
candidate patch
This patch fixes the additional problem. We have a (...) ctor in a base class,
reexported with an access declaration. We try to do_build_copy_constructor
from that, but then FUNCTION_FIRST_USER_PARM is NULL, and we attempt to
dereference it unconditionally, since copy ctors normally have at least one
user parm. Should this one even match as a copy ctor? Checking...
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--- Comment #19 from Rainer Orth <ro at gcc dot gnu.org> ---
Created attachment 45163
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Preliminary patch for regular sparc output patter test failures
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Subject: [Bug tree-optimization/85726] [7/8/9 Regression] div C1 to div C2 match.pd suboptimization
Date: Wed, 05 Dec 2018 16:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45164
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gcc9-pr85726.patch
Untested fix.
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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/80953] Support libsanitizer on Solaris
Date: Wed, 05 Dec 2018 16:09:00 -0000
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--- Comment #20 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #18 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> (> These are often just off-by-one errors in the line numbers; I believe I
>> have a patch around somewhere to fix at least some of those...
>
> OK, I see, a bit annoying in the test results though.
Very true. The attached patch allows for the line number variations
I'm seeing in the failing sparc output pattern tests. I've no idea yet
if something like this is acceptable, though.
This leaves me with the following output patter failures (on Solaris
11.5 Beta):
c-c++-common/asan/global-overflow-1.c
AddressSanitizer: nested bug in the same thread, aborting.
c-c++-common/asan/pr62089.c
AddressSanitizer: nested bug in the same thread, aborting.
c-c++-common/asan/strlen-overflow-1.c
AddressSanitizer: nested bug in the same thread, aborting.
g++.dg/asan/deep-tail-call-1.C
AddressSanitizer: nested bug in the same thread, aborting.
g++.dg/asan/function-argument-3.C
empty output at -O0
gcc.dg/asan/use-after-scope-5.c
AddressSanitizer:DEADLYSIGNAL (SIGBUS), a recent regression to
be dealt with separately
and of course the execution failures.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/80953] Support libsanitizer on Solaris
Date: Wed, 05 Dec 2018 16:13:00 -0000
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--- Comment #21 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think it is important to find out why there are those differences in line
numbers. Is libbacktrace broken on Solaris, or not used at all, something
different?
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From: "wjwray at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/72842] non-type template-parameter of type void
Date: Wed, 05 Dec 2018 16:34:00 -0000
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Will Wray <wjwray at gmail dot com> changed:
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--- Comment #8 from Will Wray <wjwray at gmail dot com> ---
Reporting a (non-variadic) case here in which gcc incorrectly accepts void,
and now also accepts class types not satisfying the requirements for a
class type non-type template parameter (now they are implemented on trunk).
https://godbolt.org/z/fjFzMm
template <typename T,T> struct TT;
template <typename T, template <typename,T> class TT> struct TTT {};
TTT<void,TT> x;
GCC accepts the variable declaration
(or explicit instantiation template struct TTT<void,TT>; )
Clang rejects with:
error: a non-type template parameter cannot have type 'void'
template <typename T, template <typename,T> class TT> struct TTT {};
^
This is easy to CONFIRM via the compiler explorer link above.
Also
With class-type non-type template parameters now in gcc trunk
GCC incorrectly accepts this:
struct NotNTTP { int mutable i; };
TTT<NotNTTP,TT> c;
https://godbolt.org/z/jfioyB
(The compiler explorer link implements a constraint to test
if a type fits the requirements of a non-type template parameter,
otherwise hard to implement without relying on default construction)
Perhaps this should be a new bug as the title is specific to void.
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Subject: [Bug testsuite/88369] [9 regression] g++.dg/vect/pr33426-ivdep.cc etc. FAIL
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45165
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45165&action=edit
gcc9-pr88369.patch
Only those two and not the 4 other ones?
Does the following patch help?
>From gcc-bugs-return-624359-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 16:44:58 2018
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Subject: [Bug testsuite/88332] [9 regression] gcc.dg/Wattributes-10.c fails starting with r265728
Date: Wed, 05 Dec 2018 16:44:00 -0000
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--- Comment #8 from Segher Boessenkool <segher at gcc dot gnu.org> ---
"target pdp11*-*-*" is the _comment_ argument to dg-error here as written;
that's why it is displayed in the summary like that, too. I don't see why
it doesn't fail on most systems though, hrm.
FWIW, I'll update gcc110 to centos 7.6 some time soon (from 7.4).
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/88320] GCC suggests variables that don't exist yet
Date: Wed, 05 Dec 2018 17:12:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-12-05
Assignee|unassigned at gcc dot gnu.org |dmalcolm at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #7 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Am testing a candidate patch for this.
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Subject: [Bug c/88367] [9 Regression] -fno-delete-null-pointer-checks doesn't work properly
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The dumps aren't very readable with all the instrumentations.
Anyway, if I look at -fdump-tree-all-lineno dumps, I see:
[/root/src/vzkernel/lib//kmapset.c:47:8] goto <bb 19>; [100.00%]
...
<bb 19> [local count: 2396963771]:
# link_a_99 = PHI <[/root/src/vzkernel/lib//kmapset.c:43:9] _96(13),
[/root/src/vzkernel/lib//kmapset.c:52:10] _115(18)>
# link_b_101 = PHI <[/root/src/vzkernel/lib//kmapset.c:45:9] _98(13),
[/root/src/vzkernel/lib//kmapset.c:54:10] _117(18)>
# DEBUG link_b => link_b_101
# DEBUG link_a => link_a_99
[/root/src/vzkernel/lib//kmapset.c:47:9] _118 =
[/root/src/vzkernel/lib//kmapset.c:47:9]
&[/root/src/vzkernel/lib//kmapset.c:47:16] link_a_99->ma
p_link;
[/root/src/vzkernel/lib//kmapset.c:47:8] if (_118 != 0B)
goto <bb 14>; [96.34%]
else
goto <bb 20>; [3.66%]
still in thread1 dump, but not in vrp1 dump.
In -fdump-tree-vrp1-lineno-details-alias dump I see:
Visiting statement:
[/root/src/vzkernel/lib//kmapset.c:47:9] # PT = nonlocal escaped null
_118 = [/root/src/vzkernel/lib//kmapset.c:47:9]
&[/root/src/vzkernel/lib//kmapset.c:47:16] link_a_99->map_link;
Found new range for _118: struct hlist_node * ~[0B, 0B]
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Subject: [Bug c++/88320] GCC suggests variables that don't exist yet
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--- Comment #8 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
FWIW, clang trunk currently gives the same erroneous suggestion:
<source>:4:19: error: use of undeclared identifier 'aresults'; did you mean
'aresult'?
int aresult = aresults +1;
^~~~~~~~
aresult
<source>:4:9: note: 'aresult' declared here
int aresult = aresults +1;
^
1 error generated.
>From gcc-bugs-return-624363-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 17:20:22 2018
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/88362] attribute aligned silently ignored on C++ references
Date: Wed, 05 Dec 2018 17:20:00 -0000
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--- Comment #4 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
It's not very clear to me what an aligned attribute on a reference, or a
check of the alignment of a reference, should mean anyway.
Note that in some places, [[]]-style attributes appertain to different
syntactic constructs than __attribute__ appertains in the same place (and
in any case, what [[]] appertains to is more precisely defined, whereas
what __attribute__ appertains to is what keeps compatibility with existing
code).
C++ alignas can be applied to references, but I don't see anything in
[dcl.align] to clarify what it means there - does it align the referenced
type (so that it's only valid to bind the reference to an object that
itself is sufficiently aligned), or something else?
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Subject: [Bug fortran/88357] ICE in parse_associate, at fortran/parse.c:4568
Date: Wed, 05 Dec 2018 17:21:00 -0000
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--- Comment #4 from G. Steinmetz <gscfq@t-online.de> ---
Thanks for working on these issues.
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Subject: [Bug fortran/88376] New: ICE in is_illegal_recursion, at fortran/resolve.c:1689
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Bug ID: 88376
Summary: ICE in is_illegal_recursion, at fortran/resolve.c:1689
Product: gcc
Version: 9.0
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With invalid code down to gfortran-6 :
$ cat z1.f90
module m
integer :: n
contains
subroutine s
character(n(3)) :: c
end
end
$ gfortran-5 -c z1.f90
z1.f90:5:16:
character(n(3)) :: c
1
Error: 'n' at (1) is not a function
$ gfortran-9-20181202 -c z1.f90
f951: internal compiler error: in is_illegal_recursion, at
fortran/resolve.c:1689
0x67f5e9 is_illegal_recursion
../../gcc/fortran/resolve.c:1689
0x690e3e resolve_function
../../gcc/fortran/resolve.c:3296
0x68dcad gfc_resolve_expr(gfc_expr*)
../../gcc/fortran/resolve.c:6832
0x62140f gfc_reduce_init_expr(gfc_expr*)
../../gcc/fortran/expr.c:2953
0x60771d gfc_match_char_spec(gfc_typespec*)
../../gcc/fortran/decl.c:3288
0x60ddc7 gfc_match_decl_type_spec(gfc_typespec*, int)
../../gcc/fortran/decl.c:3931
0x60eeec gfc_match_data_decl()
../../gcc/fortran/decl.c:5853
0x66f6e3 match_word
../../gcc/fortran/parse.c:65
0x66f6e3 decode_statement
../../gcc/fortran/parse.c:376
0x67118a next_free
../../gcc/fortran/parse.c:1235
0x67118a next_statement
../../gcc/fortran/parse.c:1467
0x6734f4 parse_spec
../../gcc/fortran/parse.c:3675
0x67526c parse_progunit
../../gcc/fortran/parse.c:5674
0x675651 parse_contained
../../gcc/fortran/parse.c:5575
0x676415 parse_module
../../gcc/fortran/parse.c:5947
0x676747 gfc_parse_file()
../../gcc/fortran/parse.c:6250
0x6bf5ff gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
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Subject: [Bug fortran/88377] New: ICE in gfc_omp_clause_copy_ctor, at fortran/trans-openmp.c:614
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Bug ID: 88377
Summary: ICE in gfc_omp_clause_copy_ctor, at
fortran/trans-openmp.c:614
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
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Affects versions down to at least gfortran-5 :
$ cat z1.f90
program p
call s(3)
contains
subroutine s(n)
integer :: n
character(n), allocatable :: x
x = 'abc'
!$omp task
print *, x, (x == 'abc')
!$omp end task
end
end
$ gfortran-9-20181202 z1.f90 -static-libgfortran
$ a.out
abc T
$ gfortran-9-20181202 -c z1.f90 -fopenmp
during GIMPLE pass: omplower
z1.f90:8:0:
8 | !$omp task
|
internal compiler error: Segmentation fault
0xb2ec9f crash_signal
../../gcc/toplev.c:326
0x72193c gfc_omp_clause_copy_ctor(tree_node*, tree_node*, tree_node*)
../../gcc/fortran/trans-openmp.c:614
0xa3b08f lower_rec_input_clauses
../../gcc/omp-low.c:4880
0xa3eb36 lower_omp_taskreg
../../gcc/omp-low.c:8965
0xa346b6 lower_omp_1
../../gcc/omp-low.c:10405
0xa346b6 lower_omp
../../gcc/omp-low.c:10495
0xa35529 lower_omp_1
../../gcc/omp-low.c:10331
0xa35529 lower_omp
../../gcc/omp-low.c:10495
0xa3544e lower_omp_1
../../gcc/omp-low.c:10339
0xa3544e lower_omp
../../gcc/omp-low.c:10495
0xa3929b execute_lower_omp
../../gcc/omp-low.c:10537
0xa3929b execute
../../gcc/omp-low.c:10584
>From gcc-bugs-return-624367-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 17:29:49 2018
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From: "pkoning at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/88332] [9 regression] gcc.dg/Wattributes-10.c fails starting with r265728
Date: Wed, 05 Dec 2018 17:29:00 -0000
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--- Comment #9 from pkoning at gcc dot gnu.org ---
Comment? I thought the comment is the null string after the regexp to match.
Should it read { target { pdp11-*-* } } with the extra braces?
Other examples show up both with the braces and without, but the example in the
documentation is written without.
>From gcc-bugs-return-624368-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 17:31:07 2018
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From: "jg at jguk dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/88320] GCC suggests variables that don't exist yet
Date: Wed, 05 Dec 2018 17:31:00 -0000
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--- Comment #9 from Jonny Grant <jg at jguk dot org> ---
(In reply to David Malcolm from comment #8)
> FWIW, clang trunk currently gives the same erroneous suggestion:
>
> <source>:4:19: error: use of undeclared identifier 'aresults'; did you mean
> 'aresult'?
> int aresult = aresults +1;
> ^~~~~~~~
> aresult
> <source>:4:9: note: 'aresult' declared here
> int aresult = aresults +1;
> ^
> 1 error generated.
Being better than Clang is always a plus.
>From gcc-bugs-return-624369-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 17:39:48 2018
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Subject: [Bug c/88367] [9 Regression] -fno-delete-null-pointer-checks doesn't work properly
Date: Wed, 05 Dec 2018 17:39:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
In GCC 8 we had:
else if (code == POINTER_PLUS_EXPR)
{
/* For pointer types, we are really only interested in asserting
whether the expression evaluates to non-NULL. */
if (range_is_nonnull (&vr0) || range_is_nonnull (&vr1))
set_value_range_to_nonnull (vr, expr_type);
and now we have:
else if (code == POINTER_PLUS_EXPR)
{
/* For pointer types, we are really only interested in asserting
whether the expression evaluates to non-NULL. */
if (!range_includes_zero_p (&vr0)
|| !range_includes_zero_p (&vr1))
vr->set_nonnull (expr_type);
I think range_is_nonnull (&vr1) was pretty much never true before, that needs
vr1 (which is the integral offset) to be exactly ~[0, 0]; here we had constant
offset there (-24UL).
So, if the UB stuff kernel is doing is meant to be considered ok for
-fno-delete-null-pointer-checks, we either need to guard this condition on
flag_delete_null_pointer_checks, or think of what we want to support and what
we don't. E.g. do we want to treat pointer wrapping as UB? A problem is that
POINTER_PLUS_EXPR last argument is unsigned sizetype, so negative offsets
appear as very large positive ones. So, perhaps do we want to conclude that if
vr0 doesn't include zero and vr1 is guaranteed not to have most significant bit
set (i.e. appear as negative), then the result is nonnull, otherwise varying?
Of course for flag_delete_null_pointer_checks do what we do right now.
>From gcc-bugs-return-624370-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 17:40:44 2018
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Subject: [Bug c++/88146] ice in tsubst_copy, at cp/pt.c:16014
Date: Wed, 05 Dec 2018 17:40:00 -0000
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--- Comment #8 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
So, no, it's not a copy ctor, but apparently we're reusing the logic that
synthesizes them for other non-default ctors.
>From gcc-bugs-return-624371-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 17:47:30 2018
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Subject: [Bug c/87615] Possible excessive compile time with -O2
Date: Wed, 05 Dec 2018 17:47:00 -0000
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--- Comment #11 from Martin Jambor <jamborm at gcc dot gnu.org> ---
It's actually, ipa_polymorphic_call_context::get_dynamic_type that causes
problems here. I'll prepare a patch.
>From gcc-bugs-return-624372-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 17:49:08 2018
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Subject: [Bug c++/88362] attribute aligned silently ignored on C++ references
Date: Wed, 05 Dec 2018 17:49:00 -0000
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--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
I think the attribute on references needs to work the same way as on pointers
so that we get consistent behavior for reference members. __alignof__ should
return the corresponding alignment. For example, in the following all three
members are 32-byte aligned as expected:
struct S {
__attribute__ ((aligned (32))) int i;
__attribute__ ((aligned (32))) int *p;
__attribute__ ((aligned (32))) int &r;
};
S s = { 0, &s.i, s.i };
but in the following the last assertion fails with GCC (it passes with Clang):
static_assert (__alignof__ (s.i) == 32);
static_assert (__alignof__ (s.p) == 32);
static_assert (__alignof__ (s.r) == 32);
>From gcc-bugs-return-624373-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 17:50:56 2018
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88376] [7/8/9 Regression] ICE in is_illegal_recursion, at fortran/resolve.c:1689
Date: Wed, 05 Dec 2018 17:50:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Known to work| |7.3.0
Keywords| |ice-on-invalid-code
Last reconfirmed| |2018-12-05
Ever confirmed|0 |1
Summary|ICE in |[7/8/9 Regression] ICE in
|is_illegal_recursion, at |is_illegal_recursion, at
|fortran/resolve.c:1689 |fortran/resolve.c:1689
Target Milestone|--- |7.4
Known to fail| |7.3.1, 8.2.0, 9.0
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The change of behavior occurred between revision r258235 (2018-03-04, error)
and r258362 (2018-03-08, ICE) and has been back ported to GCC6 and 7.
>From gcc-bugs-return-624374-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 18:36:30 2018
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Subject: [Bug c++/88378] New: notes for template deduction errors mention "[with U = U]"
Date: Wed, 05 Dec 2018 18:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88378
Bug ID: 88378
Summary: notes for template deduction errors mention "[with U =
U]"
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
In error message like the one below where GCC fails to deduce the template
argument GCC includes notes that print things like "[with U = U]" -- i.e., the
template argument is the same as name of the parameter. It's only mildly
confusing in this small test case but in real world code with more template
parameters and where the names are much longer I suspect it makes the errors
quite a bit harder to decipher. I think just skipping the "[with U = U]" when
the deduction failed would be an improvement.
$ cat t.C && gcc -S -Wall t.C
template <class T>
struct S {
template <class U>
void f (U*&);
};
void g (S<int> s)
{
s.f (0);
}
t.C: In function ‘void g(S<int>)’:
t.C:9:9: error: no matching function for call to ‘S<int>::f(int)’
9 | s.f (0);
| ^
t.C:4:8: note: candidate: ‘template<class U> void S<T>::f(U*&) [with U = U; T =
int]’
4 | void f (U*&);
| ^
t.C:4:8: note: template argument deduction/substitution failed:
t.C:9:9: note: mismatched types ‘U*’ and ‘int’
9 | s.f (0);
| ^
For comparison, Clang prints just:
t.C:9:5: error: no matching member function for call to 'f'
s.f (0);
~~^
t.C:4:8: note: candidate template ignored: could not match 'U *' against 'int'
void f (U*&);
^
ICC prints:
t.C(9): error: no instance of function template "S<T>::f [with T=int]" matches
the argument list
argument types are: (int)
object type is: S<int>
s.f (0);
^
t.C(4): note: this candidate was rejected because at least one template
argument could not be deduced
void f (U*&);
^
and MSVC:
t.C(9): error C2672: 'S<int>::f': no matching overloaded function found
t.C(9): error C2784: 'void S<int>::f(U *&)': could not deduce template argument
for 'U *&' from 'int'
t.C(4): note: see declaration of 'S<int>::f'
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Subject: [Bug c/88367] [9 Regression] -fno-delete-null-pointer-checks doesn't work properly
Date: Wed, 05 Dec 2018 18:46:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45166
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45166&action=edit
gcc9-pr88367.patch
Possible untested patch.
>From gcc-bugs-return-624377-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 18:47:33 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/88359] internal compiler error: in push_reload, at reload.c:1360
Date: Wed, 05 Dec 2018 18:47:00 -0000
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--- Comment #6 from Geert linders <geert.linders at hotmail dot com> ---
Hi Pinskia,
Which minimum version of avr-gcc is suitable?
Cheers - Geert
________________________________
From: pinskia at gcc dot gnu.org <gcc-bugzilla@gcc.gnu.org>
Sent: Wednesday, 5 December 2018 10:21
To: geert.linders@hotmail.com
Subject: [Bug target/88359] internal compiler error: in push_reload, at
reload.c:1360
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88359
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-12-04
Ever confirmed|0 |1
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
4.9.x is no longer supported, can you try a newer version of GCC?
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Subject: [Bug fortran/88357] ICE in parse_associate, at fortran/parse.c:4568
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--- Comment #5 from kargl at gcc dot gnu.org ---
(In reply to G. Steinmetz from comment #4)
> Thanks for working on these issues.
Gerhard,
Can you migrate z2.f90 to its own PR? It is going to
require much more effort to fix. My first attempt
seems to have taken me down a rabbit. With z2.f90
in its own PR, I can commit the fixed for z1.f90
and z2.f90, and then close this PR.
>From gcc-bugs-return-624378-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 19:27:01 2018
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Subject: [Bug tree-optimization/88372] alloc_size attribute is ignored on function pointers
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-12-05
CC| |msebor at gcc dot gnu.org
Component|c |tree-optimization
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
This attribute is already accepted on the function pointer so it should work
just like alloc_align does. The reason why __builtin_object_size doesn't
report the size is because it only considers attributes on the called functions
in function calls and doesn't try to look for attributes on the types of
function pointers. So I'd consider this limitation a bug rather than
enhancement request. With that, accepting [[gnu::alloc_size(N)]] should make
sense as well.
With the very lightly tested patch below __builtin_object_size reports the same
size in both functions in the test case.
Index: gcc/tree-object-size.c
===================================================================
--- gcc/tree-object-size.c (revision 266799)
+++ gcc/tree-object-size.c (working copy)
@@ -414,8 +414,18 @@ alloc_object_size (const gcall *call, int object_s
gcc_assert (is_gimple_call (call));
+ /* Lopok for the called function. */
callee = gimple_call_fndecl (call);
if (!callee)
+ {
+ /* If there is no function, look at the type of the called
+ expression in case it's been declared attribute alloc_size. */
+ callee = gimple_call_fn (call);
+ if (callee && TREE_CODE (TREE_TYPE (callee)) == POINTER_TYPE)
+ callee = TREE_TYPE (callee);
+ }
+
+ if (!callee)
return unknown[object_size_type];
alloc_size = lookup_attribute ("alloc_size",
@@ -429,7 +439,8 @@ alloc_object_size (const gcall *call, int object_s
arg2 = TREE_INT_CST_LOW (TREE_VALUE (TREE_CHAIN (p)))-1;
}
- if (DECL_BUILT_IN_CLASS (callee) == BUILT_IN_NORMAL)
+ if (DECL_P (callee)
+ && DECL_BUILT_IN_CLASS (callee) == BUILT_IN_NORMAL)
switch (DECL_FUNCTION_CODE (callee))
{
case BUILT_IN_CALLOC:
>From gcc-bugs-return-624379-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 19:42:03 2018
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Subject: [Bug target/88359] internal compiler error: in push_reload, at reload.c:1360
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--- Comment #7 from Geert linders <geert.linders at hotmail dot com> ---
Hi Pinskia,
Which minimum version of avr-gcc is suitable?
Cheers - Geert
From: pinskia at gcc dot gnu.org <gcc-bugzilla@gcc.gnu.org>
Sent: Wednesday, 5 December 2018 10:21
To: geert.linders@hotmail.com
Subject: [Bug target/88359] internal compiler error: in push_reload, at
reload.c:1360
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88359
Andrew Pinski <pinskia at="" gcc="" dot="" gnu.org=""> changed:
What
|Removed
|Added
----------------------------------------------------------------------------
Status|UNCONFIRMED
|WAITING
Last
reconfirmed|
|2018-12-04
Ever
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|1
--- Comment #2 from Andrew Pinski <pinskia at="" gcc="" dot="" gnu.org=""> ---
4.9.x is no longer supported, can you try a newer version of GCC?
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Subject: [Bug c++/85569] [8 Regression] is_invocable(F, decltype(objs)...) fails with "not supported by dump_expr#" unless via indirection
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Pavel Roskin <proski at gnu dot org> changed:
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----------------------------------------------------------------------------
CC| |proski at gnu dot org
--- Comment #11 from Pavel Roskin <proski at gnu dot org> ---
I confirm the issue described in Bug 87897 has been fixed for my case, a
project that used Boost.Spirit. The project compiles, the unit tests pass.
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Subject: [Bug testsuite/88332] [9 regression] gcc.dg/Wattributes-10.c fails starting with r265728
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--- Comment #10 from Segher Boessenkool <segher at gcc dot gnu.org> ---
You have
/* { dg-error "alignment of 's' is greater" "" { target pdp11*-*-* } } */
(the "" was added in r265741, the source tree I looked at wasn't up-to-date).
dg.exp says this is
# dg-error regexp comment [{ target/xfail selector } [{.|0|linenum}]]
so it should be fine now.
>From gcc-bugs-return-624382-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 19:51:47 2018
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From: "bernhard.kaindl at thalesgroup dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/87350] NULL-Pointer problem in cplus-dem.c when executing program c++filt
Date: Wed, 05 Dec 2018 19:51:00 -0000
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Bernhard Kaindl <bernhard.kaindl at thalesgroup dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bernhard.kaindl@thalesgroup
| |.com
--- Comment #5 from Bernhard Kaindl <bernhard.kaindl at thalesgroup dot com> ---
Simple observation from the asan traces, the source and a quick test:
iterate_demangle_function (struct work_stuff *work, ...
{
[only cases for early returns here]
work_stuff_copy_to_from (&work_init, work); <- SEGV on a member of work here
work_stuff_copy_to_from () is a dumb copy function which assumes that the
vectors it shall copy have been allocated:
void work_stuff_copy_to_from (struct work_stuff *to, struct work_stuff *from)
[nothing relevant here]
for... {
int len = strlen (from->ktypevec[i]) + 1; <- SIGSEGV happens here bc
NULL.
I verified that function remember_Ktype() which does the all allocation of
work_stuff->ktypevec is never called by these POCs, hence ktypevec is still
NULL, causing the SIGSEGV.
iterate_demangle_function() itself is called from a rather complex function.
The only safe fix: Before copying work_stuff, check the work_stuff vectors to
be already. If not, return 0 -> no demangle.
>From gcc-bugs-return-624383-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 19:52:37 2018
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From: "pkoning at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug testsuite/88332] [9 regression] gcc.dg/Wattributes-10.c fails starting with r265728
Date: Wed, 05 Dec 2018 19:52:00 -0000
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--- Comment #11 from pkoning at gcc dot gnu.org ---
Thanks, I had forgotten.
Seurer, could you update to r265741 or later and check if that cures the issue?
>From gcc-bugs-return-624384-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 19:54:51 2018
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From: "gscfq@t-online.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/88379] New: ICE in resolve_assoc_var, at fortran/resolve.c:8750
Date: Wed, 05 Dec 2018 19:54:00 -0000
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Bug ID: 88379
Summary: ICE in resolve_assoc_var, at fortran/resolve.c:8750
Product: gcc
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Extracted from pr88357 :
$ cat z2.f90
program p
type t
end type
class(t), allocatable :: x[:]
associate (y => x)
end associate
end
$ gfortran-9-20181202 -c z2.f90 -fcoarray=single
f951: internal compiler error: Segmentation fault
0xb2ec9f crash_signal
../../gcc/toplev.c:326
0x684b1b resolve_assoc_var
../../gcc/fortran/resolve.c:8750
0x689231 resolve_symbol
../../gcc/fortran/resolve.c:14738
0x6acea2 do_traverse_symtree
../../gcc/fortran/symbol.c:4151
0x683c64 resolve_types
../../gcc/fortran/resolve.c:16623
0x688bcc gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16737
0x68636b gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16724
0x68636b resolve_block_construct
../../gcc/fortran/resolve.c:10163
0x68636b gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:11493
0x688b0f resolve_codes
../../gcc/fortran/resolve.c:16704
0x688bde gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16739
0x676967 resolve_all_program_units
../../gcc/fortran/parse.c:6067
0x676967 gfc_parse_file()
../../gcc/fortran/parse.c:6317
0x6bf5ff gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
>From gcc-bugs-return-624385-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 19:56:16 2018
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Subject: [Bug fortran/88357] ICE in parse_associate, at fortran/parse.c:4568
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--- Comment #6 from G. Steinmetz <gscfq@t-online.de> ---
Sure, this is now pr88379.
>From gcc-bugs-return-624386-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 20:09:29 2018
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Subject: [Bug fortran/88357] ICE in parse_associate, at fortran/parse.c:4568
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-12-05
Ever confirmed|0 |1
--- Comment #7 from kargl at gcc dot gnu.org ---
(In reply to G. Steinmetz from comment #6)
> Sure, this is now pr88379.
Thanks.
>From gcc-bugs-return-624387-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 20:10:36 2018
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From: "bernhard.kaindl at thalesgroup dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/87350] NULL-Pointer problem in cplus-dem.c when executing program c++filt
Date: Wed, 05 Dec 2018 20:10:00 -0000
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--- Comment #6 from Bernhard Kaindl <bernhard.kaindl at thalesgroup dot com> ---
Created attachment 45167
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45167&action=edit
Safe fix: Before copying work, check if the vectors have been allocated. If
not, input wasn't valid.
Fixes CVE-2018-17794:
In cplus-dem.c in GNU libiberty, as distributed in GNU Binutils 2.31 (and all
prior versions) There is a NULL pointer dereference in work_stuff_copy_to_from
when called from iterate_demangle_function.
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-17794
Safe fix: Before copying work, check if the vectors have been allocated.
If not, input wasn't valid. -- Bernhard Kaindl
diff --git a/libiberty/cplus-dem.c b/libiberty/cplus-dem.c
index 6d58bd899b..ab30cd5fd5 100644
--- a/libiberty/cplus-dem.c
+++ b/libiberty/cplus-dem.c
@@ -2723,6 +2723,11 @@ iterate_demangle_function (struct work_stuff *work,
const char **mangled,
|| strstr (scan + 2, "__") == NULL)
return demangle_function_name (work, mangled, declp, scan);
+ /* Before copying work, check if the vectors have been allocated.
+ If not, our input isn't a valid mangled name and we'd sigseg then: */
+ if (!work->typevec || !work->ktypevec || !work->btypevec)
+ return 0;
+
/* Save state so we can restart if the guess at the correct "__" was
wrong. */
string_init (&decl_init);
It would be enough to check just for !work->typevec to fix this CVE, the others
are just related as work_stuff_copy_to_from() copies them in the same way as
ktypevec.
To be sure there is no oversight, proper review and testing would be in
required.
>From gcc-bugs-return-624388-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 20:24:01 2018
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Subject: [Bug c++/87531] [8/9 Regression] assignment operator does nothing if performed as a call via operatorDate: Wed, 05 Dec 2018 20:24:00 -0000
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petschy at gmail dot com changed:
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----------------------------------------------------------------------------
CC| |petschy at gmail dot com
--- Comment #7 from petschy at gmail dot com ---
After this fix, the following code doesn't compile:
template<typename T>
struct Ptr
{
Ptr& operator=(T* p_)
{
return operator=<T>(p_);
}
template<typename U>
Ptr& operator=(U* p_)
{
ptr = p_;
return *this;
}
T* ptr = nullptr;
};
$ g++-8.2.1 -Wall -std=c++11 -c 20181204-templated_opeq.cpp
20181204-templated_opeq.cpp: In member function ‘Foo<T>&
Foo<T>::operator=(T*)’:
20181204-templated_opeq.cpp:6:21: error: expected primary-expression before ‘>’
token
return operator=<T>(p_);
^
On the gcc-8-branch, the commit before the fix (a9a931e4) is OK. 7.3.1
(4c925b84) is OK. Tested on Debian Stretch, AMD64.
Is the above code invalid?
>From gcc-bugs-return-624389-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 20:26:25 2018
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Subject: [Bug tree-optimization/88064] [9 Regression] Incorrect vectorizer over_widening pattern handling
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #4 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Fixed on trunk.
>From gcc-bugs-return-624390-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 20:28:48 2018
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From: "matt at godbolt dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88380] New: Sequence of not-explicitly initialised, initialised, variable length generates no initialiser
Date: Wed, 05 Dec 2018 20:28:00 -0000
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Bug ID: 88380
Summary: Sequence of not-explicitly initialised, initialised,
variable length generates no initialiser
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Assignee: unassigned at gcc dot gnu.org
Reporter: matt at godbolt dot org
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In the following code:
---
struct S {
char uninit;
char initialised = 11;
char variable[];
};
void test() {
extern void use(const S & p);
S p {};
use(p);
}
---
(Compiled with Wall Wextra; see https://gcc.godbolt.org/z/4ubhIM )
...no code to initialise "initialised" is generated. Commenting out any one of
the members causes structure initialisation to take place. Changing the
`variable` to be either zero-sized or not an array also causes initialisation
to take place.
The equivalent in clang always initialises.
I'm not sure whether this is expected, or not, but I would hope for either a
diagnostic if this is UB, or for it to be consistent when other memebers are
initialised.
>From gcc-bugs-return-624391-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 20:40:52 2018
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From: "seurer at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug testsuite/88332] [9 regression] gcc.dg/Wattributes-10.c fails starting with r265728
Date: Wed, 05 Dec 2018 20:40:00 -0000
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seurer at gcc dot gnu.org changed:
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--- Comment #12 from seurer at gcc dot gnu.org ---
I tried r265741 and it does work now.
>From gcc-bugs-return-624392-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 20:43:42 2018
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/88320] GCC suggests variables that don't exist yet
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |patch
URL| |https://gcc.gnu.org/ml/gcc-
| |patches/2018-12/msg00309.ht
| |ml
--- Comment #10 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Candidate patch:
https://gcc.gnu.org/ml/gcc-patches/2018-12/msg00309.html
>From gcc-bugs-return-624393-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 20:49:28 2018
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/52869] [DR 1207] "this" not being allowed in noexcept clauses
Date: Wed, 05 Dec 2018 20:49:00 -0000
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--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The exception specification seems to be processed too early, before the other
class members are in scope. This slight variation of comment 5 still fails on
trunk:
struct S {
void g() noexcept(noexcept(f())) { }
void h() noexcept(noexcept(this->f())) { }
void f() { }
};
2869.cc:2:32: error: 'f' was not declared in this scope
2 | void g() noexcept(noexcept(f())) { }
| ^
52869.cc:3:38: error: 'struct S' has no member named 'f'
3 | void h() noexcept(noexcept(this->f())) { }
| ^
>From gcc-bugs-return-624394-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 20:52:28 2018
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88362] attribute aligned silently ignored on C++ references
Date: Wed, 05 Dec 2018 20:52:00 -0000
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--- Comment #6 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Wed, 5 Dec 2018, msebor at gcc dot gnu.org wrote:
> so that we get consistent behavior for reference members. __alignof__ should
> return the corresponding alignment. For example, in the following all three
But why should __alignof__ on a reference be consistent with __alignof__
on a pointer, rather than being consistent with e.g. assignment to the
reference (i.e. returning the alignment of the underlying object pointed
to)?
>From gcc-bugs-return-624395-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 20:57:18 2018
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88364] [9 Regression] Wrong-code due to CLOBBER
Date: Wed, 05 Dec 2018 20:57:00 -0000
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--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Probably easiest to omit the clobber if there is a reference.
>From gcc-bugs-return-624396-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 21:43:02 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/88381] New: __builtin_thread_pointer missing documentation, defined as implicit_p
Date: Wed, 05 Dec 2018 21:43:00 -0000
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Bug ID: 88381
Summary: __builtin_thread_pointer missing documentation,
defined as implicit_p
Product: gcc
Version: 9.0
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The __builtin_thread_pointer and __builtin_thread_pointer and
__builtin_set_thread_pointer functions added in r192364 (or rather moved from a
number of back-ends to the middle-end) are missing documentation.
In addition, they are also the only "non-ansi" built-ins that have the
IMPLICIT_P flag set in the builtin_info array (by non-ansi I mean those added
by a call to def_builtin_1() with the nonansi_p argument set). I don't think
this causes any problems for programs, but it's confusing when working with the
GCC sources -- see the discussion here:
https://gcc.gnu.org/ml/gcc-patches/2018-11/msg02532.html
I haven't read the whole history behind the change in r192364 but my best guess
is that while the IMPLICIT_P setting is likely correct (same as for
__builtin_return_address, for instance), the nonansi_p setting is not. The
built-ins are defined via the DEF_BUILTIN macro when they probably should be
defined by DEF_GCC_BUILTIN instead. The former is typically used to define
other macros (like for library built-ins) while the latter is for GCC
intrinsics with no corresponding library functions. Using the latter would
have the effect of calling def_builtin_1() with nonansi_p clear.
>From gcc-bugs-return-624397-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 21:49:16 2018
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From: "richard-gccbugzilla at metafoo dot co.uk" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/88382] New: undocumented GNU C extension: C++ raw string literals permitted in GNU C
Date: Wed, 05 Dec 2018 21:49:00 -0000
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Bug ID: 88382
Summary: undocumented GNU C extension: C++ raw string literals
permitted in GNU C
Product: gcc
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GCC's documentation of GNU C extensions appears not to mention allowing raw
string literals in C, which GCC has permitted in -std=gnu* since GCC 5.
>From gcc-bugs-return-624398-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 22:35:25 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88362] attribute aligned silently ignored on C++ references
Date: Wed, 05 Dec 2018 22:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88362
--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
I would think for the same reason why attribute aligned applies to the
reference and not to the type it refers to. If it makes sense for the
following to declare an overaligned reference to an ordinary int rather than a
reference to an overaligned int then it should also make sense to ask how the
reference is aligned and get the right answer.
extern __attribute__ ((aligned (64))) int &r;
But if the alignment of the reference isn't important (and I think that
argument could very well be made because references are mostly transparent to
users) then specifying the attribute on its declaration might as well mean that
it applies to the type of the referrent (or both).
But the current semantics of the attribute declaring an overaligned reference
don't seem very useful; more likely it's going to be a mistake.
>From gcc-bugs-return-624399-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 22:38:22 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88383] New: ICE calling _builtin_has_attribute(r, aligned(N))) on an overaligned reference r
Date: Wed, 05 Dec 2018 22:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88383
Bug ID: 88383
Summary: ICE calling _builtin_has_attribute(r, aligned(N))) on
an overaligned reference r
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
While pondering bug 88362 I noticed that calling __builtin_has_attribute (r,
aligned (N)) on a reference like in the test case below causes an ICE:
$ cat t.C && gcc -O2 -S -Wall -Wextra t.C
extern __attribute__ ((aligned (8))) int &r;
int f ()
{
return __builtin_has_attribute (r, aligned (8));
}
t.C: In function ‘int f()’:
t.C:5:48: internal compiler error: tree check: expected tree that contains
‘decl minimal’ structure, have ‘indirect_ref’ in build_decl, at tree.c:4988
5 | return __builtin_has_attribute (r, aligned (8));
| ^
0x1891993 tree_contains_struct_check_failed(tree_node const*,
tree_node_structure_enum, char const*, int, char const*)
/ssd/src/gcc/svn/gcc/tree.c:9931
0x82a67e contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
/ssd/src/gcc/svn/gcc/tree.h:3268
0x187db4d build_decl(unsigned int, tree_code, tree_node*, tree_node*)
/ssd/src/gcc/svn/gcc/tree.c:4988
0xc6513e validate_attribute
/ssd/src/gcc/svn/gcc/c-family/c-attribs.c:3998
0xc65291 has_attribute(unsigned int, tree_node*, tree_node*, tree_node*
(*)(tree_node*))
/ssd/src/gcc/svn/gcc/c-family/c-attribs.c:4031
0xa121bf cp_parser_has_attribute_expression
/ssd/src/gcc/svn/gcc/cp/parser.c:8519
0xa112a2 cp_parser_unary_expression
/ssd/src/gcc/svn/gcc/cp/parser.c:8132
0xa133d7 cp_parser_cast_expression
/ssd/src/gcc/svn/gcc/cp/parser.c:9281
0xa134bb cp_parser_binary_expression
/ssd/src/gcc/svn/gcc/cp/parser.c:9382
0xa1438c cp_parser_assignment_expression
/ssd/src/gcc/svn/gcc/cp/parser.c:9677
0xa1473c cp_parser_expression
/ssd/src/gcc/svn/gcc/cp/parser.c:9846
0xa1b527 cp_parser_jump_statement
/ssd/src/gcc/svn/gcc/cp/parser.c:12778
0xa174e2 cp_parser_statement
/ssd/src/gcc/svn/gcc/cp/parser.c:11060
0xa18499 cp_parser_statement_seq_opt
/ssd/src/gcc/svn/gcc/cp/parser.c:11526
0xa1838d cp_parser_compound_statement
/ssd/src/gcc/svn/gcc/cp/parser.c:11480
0xa2da81 cp_parser_function_body
/ssd/src/gcc/svn/gcc/cp/parser.c:22361
0xa2dc72 cp_parser_ctor_initializer_opt_and_function_body
/ssd/src/gcc/svn/gcc/cp/parser.c:22396
0xa37e4a cp_parser_function_definition_after_declarator
/ssd/src/gcc/svn/gcc/cp/parser.c:27449
0xa37c75 cp_parser_function_definition_from_specifiers_and_declarator
/ssd/src/gcc/svn/gcc/cp/parser.c:27366
0xa29339 cp_parser_init_declarator
/ssd/src/gcc/svn/gcc/cp/parser.c:20051
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
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Subject: [Bug c/88383] ICE calling _builtin_has_attribute(r, aligned(N))) on an overaligned reference r
Date: Wed, 05 Dec 2018 22:53:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-12-05
Component|c++ |c
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
A similar ICE can be triggered in C with:
extern __attribute__ ((aligned (8))) int *p;
int f ()
{
return __builtin_has_attribute (*p, aligned (8));
}
>From gcc-bugs-return-624401-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 23:10:48 2018
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Subject: [Bug c/87028] false positive -Wstringop-truncation strncpy with global variable source string
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--- Comment #8 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Wed Dec 5 23:10:08 2018
New Revision: 266833
URL: https://gcc.gnu.org/viewcvs?rev=266833&root=gcc&view=rev
Log:
PR c/87028
* calls.c (get_attr_nonstring_decl): Avoid setting *REF to
SSA_NAME_VAR.
* gcc/gimple-low.c (lower_stmt): Fold builtin calls here.
* gimplify (maybe_fold_stmt): Avoid folding builtin calls.
PR c/87028
* c-c++-common/Wstringop-truncation.c: Remove xfails.
* gcc.dg/Wstringop-truncation-5.c: New test.
* gcc.dg/strcmpopt_1.c: Adjust.
* gcc.dg/tree-ssa/pr79697.c: Same.
Added:
trunk/gcc/testsuite/gcc.dg/Wstringop-truncation-5.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/calls.c
trunk/gcc/gimple-low.c
trunk/gcc/gimplify.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/c-c++-common/Wstringop-truncation.c
trunk/gcc/testsuite/gcc.dg/fold-bcopy.c
trunk/gcc/testsuite/gcc.dg/strcmpopt_1.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr79697.c
>From gcc-bugs-return-624402-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 23:11:30 2018
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Subject: [Bug c/87028] false positive -Wstringop-truncation strncpy with global variable source string
Date: Wed, 05 Dec 2018 23:11:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
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CC| |law at redhat dot com
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--- Comment #9 from Jeffrey A. Law <law at redhat dot com> ---
Fixed on the trunk.
>From gcc-bugs-return-624403-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Dec 05 23:37:57 2018
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Subject: [Bug rtl-optimization/85770] [9 Regression] ICE: in lra_eliminate, at lra-eliminations.c:1439 with -march=nano-1000
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Jeffrey A. Law <law at redhat dot com> changed:
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--- Comment #4 from Jeffrey A. Law <law at redhat dot com> ---
Not currently failing on the trunk. Bisecting to see if it was fixed or just
went latent...
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